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On this page are computer-accessible forms for the graph C4[ 508, 2 ] = R_254(129,128).

(I) Following is a form readable by MAGMA:

g:=Graph<508|{ {2, 3}, {146, 147}, {144, 145}, {142, 143}, {140, 141}, {138, 139}, {136, 137}, {134, 135}, {132, 133}, {130, 131}, {128, 129}, {126, 127}, {124, 125}, {122, 123}, {120, 121}, {118, 119}, {116, 117}, {114, 115}, {112, 113}, {110, 111}, {108, 109}, {106, 107}, {104, 105}, {102, 103}, {100, 101}, {98, 99}, {96, 97}, {94, 95}, {92, 93}, {90, 91}, {88, 89}, {4, 5}, {6, 7}, {8, 9}, {10, 11}, {12, 13}, {14, 15}, {16, 17}, {18, 19}, {20, 21}, {22, 23}, {24, 25}, {26, 27}, {28, 29}, {30, 31}, {32, 33}, {34, 35}, {36, 37}, {38, 39}, {40, 41}, {42, 43}, {44, 45}, {46, 47}, {48, 49}, {50, 51}, {52, 53}, {54, 55}, {56, 57}, {58, 59}, {60, 61}, {62, 63}, {64, 65}, {66, 67}, {68, 69}, {70, 71}, {72, 73}, {74, 75}, {76, 77}, {78, 79}, {80, 81}, {82, 83}, {84, 85}, {86, 87}, {148, 149}, {150, 151}, {152, 153}, {154, 155}, {156, 157}, {158, 159}, {160, 161}, {162, 163}, {164, 165}, {166, 167}, {168, 169}, {170, 171}, {172, 173}, {174, 175}, {176, 177}, {178, 179}, {180, 181}, {182, 183}, {184, 185}, {186, 187}, {188, 189}, {190, 191}, {192, 193}, {194, 195}, {196, 197}, {198, 199}, {200, 201}, {202, 203}, {204, 205}, {206, 207}, {208, 209}, {210, 211}, {212, 213}, {214, 215}, {216, 217}, {218, 219}, {220, 221}, {222, 223}, {224, 225}, {226, 227}, {228, 229}, {230, 231}, {232, 233}, {234, 235}, {236, 237}, {238, 239}, {240, 241}, {242, 243}, {244, 245}, {246, 247}, {248, 249}, {250, 251}, {252, 253}, {1, 2}, {253, 254}, {145, 146}, {141, 142}, {137, 138}, {133, 134}, {129, 130}, {125, 126}, {121, 122}, {117, 118}, {113, 114}, {109, 110}, {105, 106}, {101, 102}, {97, 98}, {93, 94}, {89, 90}, {5, 6}, {9, 10}, {13, 14}, {17, 18}, {21, 22}, {25, 26}, {29, 30}, {33, 34}, {37, 38}, {41, 42}, {45, 46}, {49, 50}, {53, 54}, {57, 58}, {61, 62}, {65, 66}, {69, 70}, {73, 74}, {77, 78}, {81, 82}, {85, 86}, {149, 150}, {153, 154}, {157, 158}, {161, 162}, {165, 166}, {169, 170}, {173, 174}, {177, 178}, {181, 182}, {185, 186}, {189, 190}, {193, 194}, {197, 198}, {201, 202}, {205, 206}, {209, 210}, {213, 214}, {217, 218}, {221, 222}, {225, 226}, {229, 230}, {233, 234}, {237, 238}, {241, 242}, {245, 246}, {249, 250}, {3, 4}, {147, 148}, {139, 140}, {131, 132}, {123, 124}, {115, 116}, {107, 108}, {99, 100}, {91, 92}, {11, 12}, {19, 20}, {27, 28}, {35, 36}, {43, 44}, {51, 52}, {59, 60}, {67, 68}, {75, 76}, {83, 84}, {155, 156}, {163, 164}, {171, 172}, {179, 180}, {187, 188}, {195, 196}, {203, 204}, {211, 212}, {219, 220}, {227, 228}, {235, 236}, {243, 244}, {251, 252}, {7, 8}, {135, 136}, {119, 120}, {103, 104}, {23, 24}, {39, 40}, {55, 56}, {71, 72}, {87, 88}, {151, 152}, {167, 168}, {183, 184}, {199, 200}, {215, 216}, {231, 232}, {247, 248}, {15, 16}, {143, 144}, {111, 112}, {47, 48}, {79, 80}, {175, 176}, {207, 208}, {239, 240}, {31, 32}, {95, 96}, {159, 160}, {223, 224}, {130, 255}, {256, 382}, {257, 383}, {63, 64}, {191, 192}, {256, 384}, {380, 508}, {379, 507}, {378, 506}, {377, 505}, {376, 504}, {375, 503}, {374, 502}, {373, 501}, {372, 500}, {371, 499}, {370, 498}, {369, 497}, {368, 496}, {367, 495}, {366, 494}, {365, 493}, {364, 492}, {363, 491}, {362, 490}, {361, 489}, {360, 488}, {359, 487}, {358, 486}, {357, 485}, {356, 484}, {355, 483}, {354, 482}, {353, 481}, {352, 480}, {351, 479}, {350, 478}, {349, 477}, {348, 476}, {347, 475}, {346, 474}, {345, 473}, {344, 472}, {343, 471}, {342, 470}, {341, 469}, {340, 468}, {339, 467}, {338, 466}, {337, 465}, {336, 464}, {335, 463}, {334, 462}, {333, 461}, {332, 460}, {331, 459}, {330, 458}, {329, 457}, {328, 456}, {327, 455}, {326, 454}, {325, 453}, {324, 452}, {323, 451}, {322, 450}, {321, 449}, {320, 448}, {319, 447}, {318, 446}, {317, 445}, {316, 444}, {315, 443}, {314, 442}, {313, 441}, {312, 440}, {311, 439}, {310, 438}, {309, 437}, {308, 436}, {307, 435}, {306, 434}, {305, 433}, {304, 432}, {303, 431}, {302, 430}, {301, 429}, {300, 428}, {299, 427}, {298, 426}, {297, 425}, {296, 424}, {295, 423}, {294, 422}, {293, 421}, {292, 420}, {291, 419}, {290, 418}, {289, 417}, {288, 416}, {287, 415}, {286, 414}, {285, 413}, {284, 412}, {283, 411}, {282, 410}, {281, 409}, {280, 408}, {279, 407}, {278, 406}, {277, 405}, {276, 404}, {275, 403}, {274, 402}, {273, 401}, {272, 400}, {271, 399}, {270, 398}, {269, 397}, {268, 396}, {267, 395}, {266, 394}, {265, 393}, {264, 392}, {263, 391}, {262, 390}, {261, 389}, {260, 388}, {259, 387}, {258, 386}, {257, 385}, {258, 384}, {382, 508}, {379, 505}, {378, 504}, {375, 501}, {374, 500}, {371, 497}, {370, 496}, {367, 493}, {366, 492}, {363, 489}, {362, 488}, {359, 485}, {358, 484}, {355, 481}, {354, 480}, {351, 477}, {350, 476}, {347, 473}, {346, 472}, {343, 469}, {342, 468}, {339, 465}, {338, 464}, {335, 461}, {334, 460}, {331, 457}, {330, 456}, {327, 453}, {326, 452}, {323, 449}, {322, 448}, {319, 445}, {318, 444}, {315, 441}, {314, 440}, {311, 437}, {310, 436}, {307, 433}, {306, 432}, {303, 429}, {302, 428}, {299, 425}, {298, 424}, {295, 421}, {294, 420}, {291, 417}, {290, 416}, {287, 413}, {286, 412}, {283, 409}, {282, 408}, {279, 405}, {278, 404}, {275, 401}, {274, 400}, {271, 397}, {270, 396}, {267, 393}, {266, 392}, {263, 389}, {262, 388}, {259, 385}, {260, 386}, {381, 507}, {380, 506}, {373, 499}, {372, 498}, {365, 491}, {364, 490}, {357, 483}, {356, 482}, {349, 475}, {348, 474}, {341, 467}, {340, 466}, {333, 459}, {332, 458}, {325, 451}, {324, 450}, {317, 443}, {316, 442}, {309, 435}, {308, 434}, {301, 427}, {300, 426}, {293, 419}, {292, 418}, {285, 411}, {284, 410}, {277, 403}, {276, 402}, {269, 395}, {268, 394}, {261, 387}, {264, 390}, {377, 503}, {376, 502}, {361, 487}, {360, 486}, {345, 471}, {344, 470}, {329, 455}, {328, 454}, {313, 439}, {312, 438}, {297, 423}, {296, 422}, {281, 407}, {280, 406}, {265, 391}, {272, 398}, {369, 495}, {368, 494}, {337, 463}, {336, 462}, {305, 431}, {304, 430}, {273, 399}, {288, 414}, {353, 479}, {352, 478}, {289, 415}, {1, 255}, {321, 447}, {320, 446}, {1, 254}, {127, 128}, {2, 256}, {254, 508}, {147, 401}, {146, 400}, {143, 397}, {142, 396}, {139, 393}, {138, 392}, {135, 389}, {134, 388}, {131, 385}, {130, 384}, {127, 381}, {126, 380}, {123, 377}, {122, 376}, {119, 373}, {118, 372}, {115, 369}, {114, 368}, {111, 365}, {110, 364}, {107, 361}, {106, 360}, {103, 357}, {102, 356}, {99, 353}, {98, 352}, {95, 349}, {94, 348}, {91, 345}, {90, 344}, {3, 257}, {6, 260}, {7, 261}, {10, 264}, {11, 265}, {14, 268}, {15, 269}, {18, 272}, {19, 273}, {22, 276}, {23, 277}, {26, 280}, {27, 281}, {30, 284}, {31, 285}, {34, 288}, {35, 289}, {38, 292}, {39, 293}, {42, 296}, {43, 297}, {46, 300}, {47, 301}, {50, 304}, {51, 305}, {54, 308}, {55, 309}, {58, 312}, {59, 313}, {62, 316}, {63, 317}, {66, 320}, {67, 321}, {70, 324}, {71, 325}, {74, 328}, {75, 329}, {78, 332}, {79, 333}, {82, 336}, {83, 337}, {86, 340}, {87, 341}, {150, 404}, {151, 405}, {154, 408}, {155, 409}, {158, 412}, {159, 413}, {162, 416}, {163, 417}, {166, 420}, {167, 421}, {170, 424}, {171, 425}, {174, 428}, {175, 429}, {178, 432}, {179, 433}, {182, 436}, {183, 437}, {186, 440}, {187, 441}, {190, 444}, {191, 445}, {194, 448}, {195, 449}, {198, 452}, {199, 453}, {202, 456}, {203, 457}, {206, 460}, {207, 461}, {210, 464}, {211, 465}, {214, 468}, {215, 469}, {218, 472}, {219, 473}, {222, 476}, {223, 477}, {226, 480}, {227, 481}, {230, 484}, {231, 485}, {234, 488}, {235, 489}, {238, 492}, {239, 493}, {242, 496}, {243, 497}, {246, 500}, {247, 501}, {250, 504}, {251, 505}, {4, 258}, {253, 507}, {252, 506}, {141, 395}, {140, 394}, {133, 387}, {132, 386}, {125, 379}, {124, 378}, {117, 371}, {116, 370}, {109, 363}, {108, 362}, {101, 355}, {100, 354}, {93, 347}, {92, 346}, {5, 259}, {12, 266}, {13, 267}, {20, 274}, {21, 275}, {28, 282}, {29, 283}, {36, 290}, {37, 291}, {44, 298}, {45, 299}, {52, 306}, {53, 307}, {60, 314}, {61, 315}, {68, 322}, {69, 323}, {76, 330}, {77, 331}, {84, 338}, {85, 339}, {148, 402}, {149, 403}, {156, 410}, {157, 411}, {164, 418}, {165, 419}, {172, 426}, {173, 427}, {180, 434}, {181, 435}, {188, 442}, {189, 443}, {196, 450}, {197, 451}, {204, 458}, {205, 459}, {212, 466}, {213, 467}, {220, 474}, {221, 475}, {228, 482}, {229, 483}, {236, 490}, {237, 491}, {244, 498}, {245, 499}, {8, 262}, {137, 391}, {136, 390}, {121, 375}, {120, 374}, {105, 359}, {104, 358}, {89, 343}, {88, 342}, {9, 263}, {24, 278}, {25, 279}, {40, 294}, {41, 295}, {56, 310}, {57, 311}, {72, 326}, {73, 327}, {152, 406}, {153, 407}, {168, 422}, {169, 423}, {184, 438}, {185, 439}, {200, 454}, {201, 455}, {216, 470}, {217, 471}, {232, 486}, {233, 487}, {248, 502}, {249, 503}, {16, 270}, {145, 399}, {144, 398}, {113, 367}, {112, 366}, {17, 271}, {48, 302}, {49, 303}, {80, 334}, {81, 335}, {176, 430}, {177, 431}, {208, 462}, {209, 463}, {240, 494}, {241, 495}, {32, 286}, {97, 351}, {96, 350}, {33, 287}, {160, 414}, {161, 415}, {224, 478}, {225, 479}, {4, 383}, {128, 507}, {1, 380}, {129, 508}, {3, 382}, {64, 318}, {65, 319}, {192, 446}, {193, 447}, {2, 381}, {255, 383}, {255, 381}, {131, 256}, {147, 272}, {143, 268}, {139, 264}, {135, 260}, {151, 276}, {155, 280}, {159, 284}, {163, 288}, {167, 292}, {171, 296}, {175, 300}, {179, 304}, {183, 308}, {187, 312}, {191, 316}, {195, 320}, {199, 324}, {203, 328}, {207, 332}, {211, 336}, {215, 340}, {219, 344}, {223, 348}, {227, 352}, {231, 356}, {235, 360}, {239, 364}, {243, 368}, {247, 372}, {251, 376}, {5, 384}, {254, 379}, {142, 267}, {140, 265}, {134, 259}, {132, 257}, {127, 506}, {125, 504}, {119, 498}, {117, 496}, {111, 490}, {109, 488}, {103, 482}, {101, 480}, {95, 474}, {93, 472}, {7, 386}, {13, 392}, {15, 394}, {21, 400}, {23, 402}, {29, 408}, {31, 410}, {37, 416}, {39, 418}, {45, 424}, {47, 426}, {53, 432}, {55, 434}, {61, 440}, {63, 442}, {69, 448}, {71, 450}, {77, 456}, {79, 458}, {85, 464}, {87, 466}, {148, 273}, {150, 275}, {156, 281}, {158, 283}, {164, 289}, {166, 291}, {172, 297}, {174, 299}, {180, 305}, {182, 307}, {188, 313}, {190, 315}, {196, 321}, {198, 323}, {204, 329}, {206, 331}, {212, 337}, {214, 339}, {220, 345}, {222, 347}, {228, 353}, {230, 355}, {236, 361}, {238, 363}, {244, 369}, {246, 371}, {252, 377}, {6, 385}, {253, 378}, {141, 266}, {133, 258}, {126, 505}, {118, 497}, {110, 489}, {102, 481}, {94, 473}, {14, 393}, {22, 401}, {30, 409}, {38, 417}, {46, 425}, {54, 433}, {62, 441}, {70, 449}, {78, 457}, {86, 465}, {149, 274}, {157, 282}, {165, 290}, {173, 298}, {181, 306}, {189, 314}, {197, 322}, {205, 330}, {213, 338}, {221, 346}, {229, 354}, {237, 362}, {245, 370}, {8, 387}, {124, 503}, {120, 499}, {108, 487}, {104, 483}, {92, 471}, {88, 467}, {12, 391}, {24, 403}, {28, 407}, {40, 419}, {44, 423}, {56, 435}, {60, 439}, {72, 451}, {76, 455}, {9, 388}, {138, 263}, {136, 261}, {123, 502}, {121, 500}, {107, 486}, {105, 484}, {91, 470}, {89, 468}, {11, 390}, {25, 404}, {27, 406}, {41, 420}, {43, 422}, {57, 436}, {59, 438}, {73, 452}, {75, 454}, {152, 277}, {154, 279}, {168, 293}, {170, 295}, {184, 309}, {186, 311}, {200, 325}, {202, 327}, {216, 341}, {218, 343}, {232, 357}, {234, 359}, {248, 373}, {250, 375}, {10, 389}, {137, 262}, {122, 501}, {106, 485}, {90, 469}, {26, 405}, {42, 421}, {58, 437}, {74, 453}, {153, 278}, {169, 294}, {185, 310}, {201, 326}, {217, 342}, {233, 358}, {249, 374}, {16, 395}, {116, 495}, {112, 491}, {20, 399}, {48, 427}, {52, 431}, {80, 459}, {84, 463}, {17, 396}, {146, 271}, {144, 269}, {115, 494}, {113, 492}, {19, 398}, {49, 428}, {51, 430}, {81, 460}, {83, 462}, {176, 301}, {178, 303}, {208, 333}, {210, 335}, {240, 365}, {242, 367}, {18, 397}, {145, 270}, {114, 493}, {50, 429}, {82, 461}, {177, 302}, {209, 334}, {241, 366}, {32, 411}, {100, 479}, {96, 475}, {36, 415}, {33, 412}, {99, 478}, {97, 476}, {35, 414}, {160, 285}, {162, 287}, {224, 349}, {226, 351}, {34, 413}, {98, 477}, {161, 286}, {225, 350}, {64, 443}, {68, 447}, {65, 444}, {67, 446}, {192, 317}, {194, 319}, {128, 382}, {129, 383}, {66, 445}, {193, 318} }>;

(II) A more general form is to represent the graph as the orbit of {2, 3} under the group generated by the following permutations:

a: (98, 351)(99, 226)(100, 480)(225, 478)(227, 353)(352, 479)
b: (34, 287)(35, 162)(36, 416)(161, 414)(163, 289)(288, 415)
c: (124, 377)(125, 252)(126, 506)(251, 504)(253, 379)(378, 505)
d: (60, 313)(61, 188)(62, 442)(187, 440)(189, 315)(314, 441)
e: (77, 330)(78, 458)(204, 457)(205, 331)
f: (13, 266)(14, 394)(140, 393)(141, 267)
g: (112, 365)(113, 240)(114, 494)(239, 492)(241, 367)(366, 493)
h: (48, 301)(49, 176)(50, 430)(175, 428)(177, 303)(302, 429)
m: (65, 318)(66, 446)(192, 445)(193, 319)
n1: (113, 366)(114, 494)(240, 493)(241, 367)
a1: (49, 302)(50, 430)(176, 429)(177, 303)
b1: (114, 367)(115, 242)(116, 496)(241, 494)(243, 369)(368, 495)
c1: (50, 303)(51, 178)(52, 432)(177, 430)(179, 305)(304, 431)
d1: (2, 380, 255, 254)(3, 126, 383, 379)(4, 125)(5, 124)(6, 123)(7, 122)(8, 121)(9, 120)(10, 119)(11, 118)(12, 117)(13, 116)(14, 115)(15, 114)(16, 113)(17, 112)(18, 111)(19, 110)(20, 109)(21, 108)(22, 107)(23, 106)(24, 105)(25, 104)(26, 103)(27, 102)(28, 101)(29, 100)(30, 99)(31, 98)(32, 97)(33, 96)(34, 95)(35, 94)(36, 93)(37, 92)(38, 91)(39, 90)(40, 89)(41, 88)(42, 87)(43, 86)(44, 85)(45, 84)(46, 83)(47, 82)(48, 81)(49, 80)(50, 79)(51, 78)(52, 77)(53, 76)(54, 75)(55, 74)(56, 73)(57, 72)(58, 71)(59, 70)(60, 69)(61, 68)(62, 67)(63, 66)(64, 65)(127, 129, 507, 382)(130, 253, 256, 506)(131, 252)(132, 251)(133, 250)(134, 249)(135, 248)(136, 247)(137, 246)(138, 245)(139, 244)(140, 243)(141, 242)(142, 241)(143, 240)(144, 239)(145, 238)(146, 237)(147, 236)(148, 235)(149, 234)(150, 233)(151, 232)(152, 231)(153, 230)(154, 229)(155, 228)(156, 227)(157, 226)(158, 225)(159, 224)(160, 223)(161, 222)(162, 221)(163, 220)(164, 219)(165, 218)(166, 217)(167, 216)(168, 215)(169, 214)(170, 213)(171, 212)(172, 211)(173, 210)(174, 209)(175, 208)(176, 207)(177, 206)(178, 205)(179, 204)(180, 203)(181, 202)(182, 201)(183, 200)(184, 199)(185, 198)(186, 197)(187, 196)(188, 195)(189, 194)(190, 193)(191, 192)(257, 505)(258, 504)(259, 503)(260, 502)(261, 501)(262, 500)(263, 499)(264, 498)(265, 497)(266, 496)(267, 495)(268, 494)(269, 493)(270, 492)(271, 491)(272, 490)(273, 489)(274, 488)(275, 487)(276, 486)(277, 485)(278, 484)(279, 483)(280, 482)(281, 481)(282, 480)(283, 479)(284, 478)(285, 477)(286, 476)(287, 475)(288, 474)(289, 473)(290, 472)(291, 471)(292, 470)(293, 469)(294, 468)(295, 467)(296, 466)(297, 465)(298, 464)(299, 463)(300, 462)(301, 461)(302, 460)(303, 459)(304, 458)(305, 457)(306, 456)(307, 455)(308, 454)(309, 453)(310, 452)(311, 451)(312, 450)(313, 449)(314, 448)(315, 447)(316, 446)(317, 445)(318, 444)(319, 443)(320, 442)(321, 441)(322, 440)(323, 439)(324, 438)(325, 437)(326, 436)(327, 435)(328, 434)(329, 433)(330, 432)(331, 431)(332, 430)(333, 429)(334, 428)(335, 427)(336, 426)(337, 425)(338, 424)(339, 423)(340, 422)(341, 421)(342, 420)(343, 419)(344, 418)(345, 417)(346, 416)(347, 415)(348, 414)(349, 413)(350, 412)(351, 411)(352, 410)(353, 409)(354, 408)(355, 407)(356, 406)(357, 405)(358, 404)(359, 403)(360, 402)(361, 401)(362, 400)(363, 399)(364, 398)(365, 397)(366, 396)(367, 395)(368, 394)(369, 393)(370, 392)(371, 391)(372, 390)(373, 389)(374, 388)(375, 387)(376, 386)(377, 385)(378, 384)(381, 508)
e1: (117, 370)(118, 498)(244, 497)(245, 371)
f1: (53, 306)(54, 434)(180, 433)(181, 307)
g1: (94, 347)(95, 222)(96, 476)(221, 474)(223, 349)(348, 475)
h1: (30, 283)(31, 158)(32, 412)(157, 410)(159, 285)(284, 411)
m1: (93, 346)(94, 474)(220, 473)(221, 347)
n2: (29, 282)(30, 410)(156, 409)(157, 283)
a2: (57, 310)(58, 438)(184, 437)(185, 311)
b2: (121, 374)(122, 502)(248, 501)(249, 375)
c2: (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254)(255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504, 505, 506, 507, 508)
d2: (75, 328)(76, 456)(202, 455)(203, 329)
e2: (11, 264)(12, 392)(138, 391)(139, 265)
f2: (78, 331)(79, 206)(80, 460)(205, 458)(207, 333)(332, 459)
g2: (14, 267)(15, 142)(16, 396)(141, 394)(143, 269)(268, 395)
h2: (62, 315)(63, 190)(64, 444)(189, 442)(191, 317)(316, 443)
m2: (70, 323)(71, 198)(72, 452)(197, 450)(199, 325)(324, 451)
n3: (82, 335)(83, 210)(84, 464)(209, 462)(211, 337)(336, 463)
a3: (18, 271)(19, 146)(20, 400)(145, 398)(147, 273)(272, 399)
b3: (6, 259)(7, 134)(8, 388)(133, 386)(135, 261)(260, 387)
c3: (76, 329)(77, 204)(78, 458)(203, 456)(205, 331)(330, 457)
d3: (12, 265)(13, 140)(14, 394)(139, 392)(141, 267)(266, 393)
e3: (79, 332)(80, 460)(206, 459)(207, 333)
f3: (15, 268)(16, 396)(142, 395)(143, 269)
g3: (90, 343)(91, 218)(92, 472)(217, 470)(219, 345)(344, 471)
h3: (26, 279)(27, 154)(28, 408)(153, 406)(155, 281)(280, 407)
m3: (96, 349)(97, 224)(98, 478)(223, 476)(225, 351)(350, 477)
n4: (32, 285)(33, 160)(34, 414)(159, 412)(161, 287)(286, 413)
a4: (118, 371)(119, 246)(120, 500)(245, 498)(247, 373)(372, 499)
b4: (54, 307)(55, 182)(56, 436)(181, 434)(183, 309)(308, 435)
c4: (108, 361)(109, 236)(110, 490)(235, 488)(237, 363)(362, 489)
d4: (44, 297)(45, 172)(46, 426)(171, 424)(173, 299)(298, 425)
e4: (84, 337)(85, 212)(86, 466)(211, 464)(213, 339)(338, 465)
f4: (37, 290)(38, 418)(164, 417)(165, 291)
g4: (101, 354)(102, 482)(228, 481)(229, 355)
h4: (20, 273)(21, 148)(22, 402)(147, 400)(149, 275)(274, 401)
m4: (87, 340)(88, 468)(214, 467)(215, 341)
n5: (23, 276)(24, 404)(150, 403)(151, 277)
a5: (92, 345)(93, 220)(94, 474)(219, 472)(221, 347)(346, 473)
b5: (28, 281)(29, 156)(30, 410)(155, 408)(157, 283)(282, 409)
c5: (69, 322)(70, 450)(196, 449)(197, 323)
d5: (5, 258)(6, 386)(132, 385)(133, 259)
e5: (73, 326)(74, 454)(200, 453)(201, 327)
f5: (9, 262)(10, 390)(136, 389)(137, 263)
g5: (71, 324)(72, 452)(198, 451)(199, 325)
h5: (7, 260)(8, 388)(134, 387)(135, 261)
m5: (95, 348)(96, 476)(222, 475)(223, 349)
n6: (31, 284)(32, 412)(158, 411)(159, 285)
a6: (74, 327)(75, 202)(76, 456)(201, 454)(203, 329)(328, 455)
b6: (10, 263)(11, 138)(12, 392)(137, 390)(139, 265)(264, 391)
c6: (81, 334)(82, 462)(208, 461)(209, 335)
d6: (17, 270)(18, 398)(144, 397)(145, 271)
e6: (85, 338)(86, 466)(212, 465)(213, 339)
f6: (21, 274)(22, 402)(148, 401)(149, 275)
g6: (64, 317)(65, 192)(66, 446)(191, 444)(193, 319)(318, 445)
h6: (109, 362)(110, 490)(236, 489)(237, 363)
m6: (45, 298)(46, 426)(172, 425)(173, 299)
n7: (107, 360)(108, 488)(234, 487)(235, 361)
a7: (43, 296)(44, 424)(170, 423)(171, 297)
b7: (103, 356)(104, 484)(230, 483)(231, 357)
c7: (39, 292)(40, 420)(166, 419)(167, 293)
d7: (125, 378)(126, 506)(252, 505)(253, 379)
e7: (61, 314)(62, 442)(188, 441)(189, 315)
f7: (86, 339)(87, 214)(88, 468)(213, 466)(215, 341)(340, 467)
g7: (22, 275)(23, 150)(24, 404)(149, 402)(151, 277)(276, 403)
h7: (67, 320)(68, 448)(194, 447)(195, 321)
m7: (116, 369)(117, 244)(118, 498)(243, 496)(245, 371)(370, 497)
n8: (52, 305)(53, 180)(54, 434)(179, 432)(181, 307)(306, 433)
a8: (4, 257)(5, 132)(6, 386)(131, 384)(133, 259)(258, 385)
b8: (99, 352)(100, 480)(226, 479)(227, 353)
c8: (35, 288)(36, 416)(162, 415)(163, 289)
d8: (126, 379)(127, 507)(253, 506)(254, 380)
e8: (100, 353)(101, 228)(102, 482)(227, 480)(229, 355)(354, 481)
f8: (36, 289)(37, 164)(38, 418)(163, 416)(165, 291)(290, 417)
g8: (122, 375)(123, 250)(124, 504)(249, 502)(251, 377)(376, 503)
h8: (58, 311)(59, 186)(60, 440)(185, 438)(187, 313)(312, 439)
m8: (105, 358)(106, 486)(232, 485)(233, 359)
n9: (41, 294)(42, 422)(168, 421)(169, 295)
a9: (89, 342)(90, 470)(216, 469)(217, 343)
b9: (25, 278)(26, 406)(152, 405)(153, 279)
c9: (115, 368)(116, 496)(242, 495)(243, 369)
d9: (51, 304)(52, 432)(178, 431)(179, 305)
e9: (88, 341)(89, 216)(90, 470)(215, 468)(217, 343)(342, 469)
f9: (24, 277)(25, 152)(26, 406)(151, 404)(153, 279)(278, 405)
g9: (120, 373)(121, 248)(122, 502)(247, 500)(249, 375)(374, 501)
h9: (56, 309)(57, 184)(58, 438)(183, 436)(185, 311)(310, 437)
m9: (106, 359)(107, 234)(108, 488)(233, 486)(235, 361)(360, 487)
n10: (42, 295)(43, 170)(44, 424)(169, 422)(171, 297)(296, 423)
a10: (63, 316)(64, 444)(190, 443)(191, 317)
b10: (119, 372)(120, 500)(246, 499)(247, 373)
c10: (55, 308)(56, 436)(182, 435)(183, 309)
d10: (80, 333)(81, 208)(82, 462)(207, 460)(209, 335)(334, 461)
e10: (16, 269)(17, 144)(18, 398)(143, 396)(145, 271)(270, 397)
f10: (97, 350)(98, 478)(224, 477)(225, 351)
g10: (33, 286)(34, 414)(160, 413)(161, 287)
h10: (104, 357)(105, 232)(106, 486)(231, 484)(233, 359)(358, 485)
m10: (40, 293)(41, 168)(42, 422)(167, 420)(169, 295)(294, 421)
n11: (102, 355)(103, 230)(104, 484)(229, 482)(231, 357)(356, 483)
a11: (38, 291)(39, 166)(40, 420)(165, 418)(167, 293)(292, 419)
b11: (111, 364)(112, 492)(238, 491)(239, 365)
c11: (47, 300)(48, 428)(174, 427)(175, 301)
d11: (123, 376)(124, 504)(250, 503)(251, 377)
e11: (59, 312)(60, 440)(186, 439)(187, 313)
f11: (83, 336)(84, 464)(210, 463)(211, 337)
g11: (19, 272)(20, 400)(146, 399)(147, 273)
h11: (66, 319)(67, 194)(68, 448)(193, 446)(195, 321)(320, 447)
m11: (110, 363)(111, 238)(112, 492)(237, 490)(239, 365)(364, 491)
n12: (46, 299)(47, 174)(48, 428)(173, 426)(175, 301)(300, 427)
a12: (91, 344)(92, 472)(218, 471)(219, 345)
b12: (27, 280)(28, 408)(154, 407)(155, 281)
c12: (68, 321)(69, 196)(70, 450)(195, 448)(197, 323)(322, 449)
d12: (72, 325)(73, 200)(74, 454)(199, 452)(201, 327)(326, 453)
e12: (8, 261)(9, 136)(10, 390)(135, 388)(137, 263)(262, 389)

(III) Last is Groups&Graphs. Copy everything between (not including) the lines of asterisks into a plain text file and save it as "graph.txt". Then launch G&G (Groups&Graphs) and select Read Text from the File menu.

**************

&Graph
C4[ 508, 2 ]
508
-1 254 2 255 380
-2 1 3 256 381
-3 2 4 257 382
-4 3 5 258 383
-5 4 6 259 384
-6 385 5 7 260
-7 386 6 8 261
-8 387 7 9 262
-9 388 8 10 263
-10 11 264 389 9
-11 12 265 390 10
-12 11 13 266 391
-13 12 14 267 392
-14 13 15 268 393
-15 14 16 269 394
-16 15 17 270 395
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-23 22 24 277 402
-24 23 25 278 403
-25 24 26 279 404
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-28 407 27 29 282
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-30 409 29 31 284
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-34 33 35 288 413
-35 34 36 289 414
-36 35 37 290 415
-37 36 38 291 416
-38 37 39 292 417
-39 418 38 40 293
-40 419 39 41 294
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-45 44 46 299 424
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-56 55 57 310 435
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-58 57 59 312 437
-59 58 60 313 438
-60 59 61 314 439
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-65 66 319 444 64
-66 67 320 445 65
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-70 69 71 324 449
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-80 79 81 334 459
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-178 177 179 432 303
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-185 310 184 186 439
-186 187 440 311 185
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-193 192 194 447 318
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-200 199 201 454 325
-201 200 202 455 326
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-221 220 222 475 346
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-223 222 224 477 348
-224 223 225 478 349
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-228 353 227 229 482
-229 354 228 230 483
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-231 232 485 356 230
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-234 233 235 488 359
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-236 235 237 490 361
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-244 243 245 498 369
-245 244 246 499 370
-246 245 247 500 371
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-253 254 507 378 252
-254 253 1 508 379
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-256 2 382 131 384
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-258 133 386 4 384
-259 385 134 387 5
-260 386 135 388 6
-261 387 136 389 7
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-263 389 138 391 9
-264 390 139 392 10
-265 11 391 140 393
-266 12 392 141 394
-267 13 393 142 395
-268 143 396 14 394
-269 144 397 15 395
-270 396 145 398 16
-271 397 146 399 17
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-273 399 148 401 19
-274 400 149 402 20
-275 401 150 403 21
-276 22 402 151 404
-277 23 403 152 405
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-289 35 415 164 417
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-296 422 171 424 42
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-372 498 247 500 118
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-502 374 123 376 248
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-505 377 126 379 251
-506 378 127 380 252
-507 253 379 128 381
-508 254 380 129 382
0

**************