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On this page are computer-accessible forms for the graph C4[ 504, 175 ] =
BGCG(UG(ATD[252,62]);K1;1).
(I) Following is a form readable by MAGMA:
g:=Graph<504|{ {250, 254}, {236, 255}, {196, 253}, {155, 255}, {145, 253}, {144,
254}, {140, 254}, {100, 254}, {37, 255}, {34, 253}, {17, 253}, {8, 255}, {15,
271}, {154, 410}, {48, 304}, {189, 445}, {57, 312}, {78, 335}, {19, 273}, {250,
504}, {41, 299}, {167, 421}, {196, 454}, {91, 344}, {108, 367}, {182, 434},
{184, 444}, {33, 292}, {152, 413}, {173, 424}, {179, 438}, {180, 433}, {88,
350}, {162, 420}, {142, 392}, {46, 297}, {3, 267}, {117, 381}, {16, 280}, {28,
276}, {48, 312}, {52, 316}, {167, 431}, {171, 419}, {143, 390}, {164, 429},
{236, 485}, {40, 290}, {148, 414}, {231, 493}, {56, 307}, {217, 466}, {77, 321},
{129, 397}, {127, 371}, {116, 376}, {79, 323}, {94, 339}, {127, 370}, {110,
355}, {137, 391}, {213, 475}, {231, 489}, {232, 486}, {199, 456}, {213, 474},
{80, 320}, {139, 411}, {106, 378}, {112, 352}, {176, 416}, {199, 471}, {44,
317}, {55, 294}, {61, 300}, {164, 437}, {206, 479}, {228, 501}, {12, 286}, {134,
404}, {72, 346}, {85, 327}, {103, 373}, {67, 336}, {147, 384}, {113, 354}, {193,
466}, {216, 459}, {162, 438}, {246, 482}, {158, 395}, {5, 275}, {12, 282}, {80,
326}, {176, 422}, {7, 272}, {44, 315}, {48, 295}, {74, 349}, {166, 433}, {54,
302}, {146, 394}, {145, 393}, {91, 323}, {235, 499}, {238, 502}, {4, 285}, {163,
442}, {21, 268}, {204, 469}, {237, 500}, {246, 495}, {30, 260}, {78, 340}, {216,
450}, {218, 448}, {242, 488}, {51, 296}, {137, 402}, {202, 465}, {245, 494},
{118, 362}, {43, 310}, {66, 351}, {105, 372}, {201, 468}, {205, 464}, {23, 265},
{153, 391}, {99, 381}, {103, 377}, {3, 284}, {120, 359}, {28, 259}, {53, 298},
{60, 291}, {214, 457}, {23, 311}, {131, 419}, {165, 388}, {243, 466}, {119,
341}, {174, 396}, {185, 411}, {2, 289}, {56, 283}, {63, 284}, {34, 262}, {247,
467}, {120, 348}, {62, 283}, {124, 345}, {81, 372}, {182, 403}, {5, 291}, {141,
427}, {167, 385}, {194, 484}, {110, 329}, {122, 349}, {190, 409}, {226, 458},
{230, 462}, {17, 312}, {149, 444}, {139, 418}, {29, 308}, {55, 286}, {67, 362},
{97, 328}, {36, 270}, {68, 366}, {80, 378}, {203, 481}, {62, 277}, {73, 354},
{93, 374}, {110, 325}, {197, 494}, {26, 310}, {36, 264}, {83, 383}, {97, 333},
{108, 320}, {225, 461}, {38, 267}, {160, 397}, {158, 435}, {112, 349}, {178,
415}, {28, 306}, {40, 263}, {127, 336}, {99, 332}, {204, 483}, {22, 294}, {133,
437}, {121, 329}, {178, 386}, {8, 313}, {87, 358}, {165, 404}, {30, 300}, {160,
402}, {152, 426}, {39, 277}, {51, 257}, {227, 465}, {3, 304}, {139, 440}, {149,
417}, {226, 470}, {1, 308}, {106, 351}, {175, 410}, {234, 479}, {244, 449}, {18,
292}, {133, 435}, {71, 369}, {191, 393}, {199, 497}, {9, 318}, {171, 412}, {209,
486}, {34, 282}, {130, 442}, {176, 392}, {215, 495}, {216, 480}, {12, 309},
{119, 334}, {18, 296}, {156, 422}, {129, 443}, {64, 379}, {247, 460}, {126,
325}, {76, 375}, {188, 391}, {21, 297}, {33, 285}, {65, 381}, {171, 407}, {95,
354}, {102, 347}, {106, 343}, {209, 492}, {15, 305}, {57, 263}, {51, 268}, {152,
423}, {79, 368}, {235, 468}, {11, 331}, {102, 294}, {15, 334}, {157, 476}, {172,
493}, {196, 389}, {199, 390}, {203, 394}, {3, 321}, {115, 305}, {20, 342}, {29,
351}, {169, 491}, {208, 402}, {38, 357}, {168, 491}, {161, 485}, {208, 404},
{213, 401}, {102, 291}, {157, 472}, {146, 471}, {104, 301}, {180, 497}, {223,
410}, {225, 420}, {232, 429}, {111, 297}, {105, 302}, {249, 446}, {138, 461},
{179, 500}, {70, 270}, {252, 436}, {140, 452}, {238, 422}, {76, 261}, {249,
432}, {98, 299}, {104, 289}, {198, 399}, {224, 425}, {45, 359}, {75, 257}, {165,
495}, {186, 496}, {38, 365}, {52, 376}, {72, 260}, {37, 360}, {134, 459}, {131,
462}, {201, 388}, {61, 371}, {124, 306}, {119, 313}, {92, 274}, {93, 275}, {205,
387}, {221, 403}, {27, 340}, {248, 439}, {163, 492}, {162, 493}, {41, 358}, {96,
303}, {12, 348}, {28, 332}, {52, 356}, {215, 391}, {243, 419}, {72, 281}, {154,
459}, {101, 308}, {111, 318}, {29, 335}, {141, 478}, {210, 385}, {223, 396},
{55, 355}, {141, 473}, {193, 405}, {200, 412}, {201, 413}, {221, 393}, {245,
417}, {6, 339}, {154, 463}, {91, 270}, {176, 485}, {227, 438}, {198, 400}, {2,
341}, {144, 455}, {16, 327}, {41, 382}, {247, 416}, {103, 319}, {229, 445}, {48,
361}, {157, 452}, {50, 363}, {240, 425}, {83, 265}, {130, 472}, {205, 407},
{244, 430}, {81, 266}, {86, 269}, {231, 444}, {24, 324}, {138, 470}, {83, 271},
{202, 406}, {4, 345}, {136, 469}, {242, 431}, {17, 335}, {143, 465}, {123, 293},
{113, 303}, {93, 259}, {26, 325}, {126, 289}, {125, 290}, {230, 441}, {228,
388}, {58, 347}, {163, 450}, {119, 278}, {195, 418}, {150, 500}, {151, 501},
{247, 405}, {1, 354}, {135, 484}, {115, 272}, {4, 359}, {33, 322}, {67, 288},
{76, 303}, {82, 305}, {53, 337}, {162, 454}, {82, 310}, {47, 330}, {173, 456},
{210, 439}, {39, 321}, {144, 502}, {53, 338}, {125, 282}, {117, 274}, {109,
266}, {202, 429}, {232, 399}, {6, 366}, {153, 497}, {18, 379}, {125, 276}, {194,
427}, {197, 428}, {98, 264}, {233, 387}, {14, 357}, {46, 325}, {86, 314}, {116,
280}, {187, 471}, {244, 408}, {32, 333}, {58, 343}, {59, 342}, {13, 355}, {140,
482}, {84, 314}, {192, 430}, {204, 418}, {224, 398}, {65, 302}, {248, 407},
{122, 277}, {72, 295}, {84, 315}, {209, 446}, {69, 308}, {155, 490}, {175, 478},
{243, 386}, {190, 460}, {27, 360}, {118, 261}, {40, 347}, {78, 317}, {170, 473},
{195, 432}, {24, 364}, {150, 482}, {63, 331}, {245, 385}, {45, 344}, {47, 346},
{98, 279}, {112, 261}, {9, 383}, {70, 304}, {83, 293}, {182, 448}, {32, 343},
{41, 350}, {43, 348}, {212, 419}, {221, 426}, {14, 374}, {138, 498}, {49, 329},
{75, 307}, {173, 469}, {183, 463}, {158, 487}, {159, 486}, {239, 406}, {77,
311}, {82, 296}, {88, 290}, {223, 421}, {234, 400}, {100, 287}, {185, 453},
{189, 449}, {179, 462}, {113, 271}, {151, 489}, {198, 440}, {203, 437}, {204,
434}, {206, 432}, {22, 361}, {43, 340}, {107, 276}, {110, 273}, {175, 464},
{225, 414}, {21, 405}, {73, 457}, {90, 474}, {213, 340}, {214, 343}, {56, 442},
{251, 377}, {57, 443}, {65, 451}, {230, 356}, {23, 404}, {158, 285}, {149, 278},
{132, 263}, {61, 446}, {79, 460}, {184, 316}, {19, 406}, {42, 431}, {66, 455},
{71, 450}, {90, 479}, {92, 473}, {226, 359}, {236, 361}, {159, 281}, {206, 328},
{219, 349}, {13, 394}, {142, 265}, {44, 427}, {239, 360}, {245, 370}, {58, 434},
{129, 265}, {124, 500}, {96, 488}, {111, 487}, {166, 302}, {207, 327}, {11,
386}, {127, 502}, {113, 504}, {62, 439}, {188, 309}, {193, 328}, {10, 384}, {79,
453}, {89, 467}, {35, 424}, {153, 274}, {87, 476}, {186, 305}, {218, 337}, {219,
336}, {170, 294}, {174, 290}, {208, 348}, {60, 433}, {128, 269}, {76, 449},
{181, 312}, {31, 401}, {136, 262}, {121, 503}, {90, 468}, {170, 292}, {180,
314}, {181, 315}, {188, 306}, {246, 376}, {69, 458}, {80, 479}, {84, 475}, {11,
411}, {150, 262}, {13, 413}, {21, 389}, {25, 393}, {74, 474}, {89, 457}, {104,
504}, {9, 408}, {99, 498}, {240, 353}, {45, 447}, {236, 382}, {30, 397}, {151,
260}, {86, 453}, {192, 339}, {222, 333}, {224, 371}, {27, 399}, {251, 367},
{133, 273}, {123, 495}, {49, 421}, {180, 288}, {210, 326}, {70, 467}, {116,
481}, {101, 496}, {190, 299}, {223, 330}, {5, 403}, {120, 494}, {42, 444}, {32,
439}, {42, 445}, {46, 441}, {88, 463}, {214, 321}, {222, 329}, {232, 383}, {241,
358}, {7, 415}, {92, 452}, {94, 454}, {95, 455}, {178, 298}, {185, 289}, {220,
324}, {17, 392}, {121, 480}, {23, 398}, {56, 417}, {190, 295}, {31, 389}, {144,
266}, {121, 483}, {36, 446}, {46, 436}, {183, 301}, {185, 291}, {196, 350},
{200, 338}, {233, 371}, {237, 375}, {70, 477}, {246, 365}, {39, 443}, {131,
287}, {129, 285}, {165, 313}, {207, 339}, {240, 364}, {25, 388}, {160, 317},
{47, 434}, {50, 428}, {156, 258}, {117, 491}, {64, 478}, {182, 296}, {238, 368},
{14, 401}, {161, 318}, {159, 256}, {132, 283}, {112, 464}, {203, 363}, {20,
437}, {77, 492}, {109, 460}, {179, 274}, {183, 278}, {219, 378}, {57, 411},
{161, 259}, {195, 353}, {228, 326}, {49, 402}, {250, 345}, {96, 451}, {174,
269}, {37, 385}, {147, 311}, {87, 499}, {107, 462}, {107, 461}, {212, 370},
{222, 376}, {235, 333}, {77, 490}, {63, 407}, {249, 337}, {155, 307}, {194,
362}, {212, 380}, {73, 480}, {97, 456}, {170, 259}, {234, 323}, {135, 300},
{177, 282}, {181, 286}, {227, 328}, {20, 440}, {63, 403}, {71, 491}, {91, 503},
{192, 364}, {216, 372}, {69, 488}, {135, 298}, {128, 301}, {108, 449}, {220,
369}, {9, 423}, {10, 420}, {62, 400}, {169, 263}, {186, 276}, {219, 373}, {15,
416}, {37, 394}, {94, 497}, {100, 459}, {191, 272}, {64, 496}, {117, 453}, {201,
377}, {2, 435}, {148, 293}, {118, 455}, {217, 360}, {241, 320}, {105, 475},
{220, 366}, {109, 478}, {211, 352}, {50, 390}, {130, 310}, {60, 392}, {195,
375}, {24, 429}, {66, 503}, {100, 465}, {172, 281}, {208, 357}, {214, 355}, {82,
484}, {146, 292}, {86, 480}, {215, 353}, {218, 364}, {81, 486}, {22, 430}, {74,
498}, {50, 395}, {123, 450}, {122, 451}, {118, 463}, {1, 443}, {19, 425}, {35,
409}, {184, 258}, {55, 396}, {102, 477}, {187, 256}, {8, 436}, {142, 306}, {60,
384}, {189, 257}, {202, 374}, {209, 365}, {177, 268}, {229, 344}, {1, 447},
{139, 309}, {20, 426}, {33, 415}, {240, 334}, {128, 319}, {159, 288}, {186,
261}, {244, 331}, {111, 431}, {116, 436}, {211, 275}, {29, 476}, {134, 327},
{90, 408}, {125, 447}, {207, 269}, {211, 273}, {241, 307}, {47, 492}, {94, 413},
{191, 380}, {2, 454}, {250, 318}, {248, 316}, {16, 468}, {74, 398}, {85, 401},
{99, 423}, {194, 262}, {107, 430}, {187, 382}, {39, 481}, {233, 303}, {239,
297}, {7, 448}, {26, 477}, {35, 484}, {93, 410}, {217, 286}, {32, 488}, {163,
363}, {43, 483}, {229, 301}, {237, 293}, {138, 323}, {134, 332}, {25, 466},
{137, 322}, {114, 441}, {68, 399}, {65, 397}, {252, 304}, {105, 421}, {59, 502},
{84, 409}, {173, 352}, {197, 264}, {230, 299}, {59, 501}, {161, 367}, {6, 457},
{38, 489}, {89, 406}, {229, 298}, {8, 472}, {252, 300}, {13, 476}, {157, 332},
{120, 425}, {27, 458}, {54, 487}, {218, 267}, {81, 387}, {141, 351}, {193, 275},
{88, 395}, {114, 417}, {168, 379}, {130, 342}, {148, 320}, {140, 344}, {212,
256}, {177, 356}, {215, 258}, {122, 428}, {164, 370}, {146, 324}, {126, 424},
{233, 319}, {31, 456}, {149, 322}, {172, 379}, {192, 279}, {151, 335}, {183,
367}, {225, 313}, {10, 467}, {96, 441}, {89, 387}, {156, 326}, {197, 287}, {205,
279}, {53, 494}, {145, 330}, {137, 338}, {71, 412}, {109, 438}, {171, 368},
{178, 361}, {181, 366}, {54, 490}, {97, 445}, {11, 470}, {69, 408}, {108, 433},
{200, 277}, {19, 461}, {45, 499}, {61, 483}, {167, 377}, {175, 369}, {198, 280},
{5, 474}, {248, 295}, {31, 448}, {40, 503}, {95, 384}, {207, 272}, {35, 451},
{132, 356}, {75, 427}, {101, 389}, {235, 267}, {52, 469}, {128, 353}, {126,
415}, {67, 418}, {222, 319}, {227, 258}, {143, 365}, {131, 352}, {136, 363},
{68, 416}, {155, 383}, {142, 362}, {78, 426}, {22, 499}, {147, 374}, {217, 316},
{7, 481}, {154, 380}, {189, 347}, {211, 309}, {64, 423}, {172, 331}, {239, 264},
{16, 504}, {150, 382}, {26, 498}, {14, 487}, {148, 381}, {147, 378}, {143, 358},
{58, 464}, {85, 447}, {187, 337}, {191, 341}, {54, 477}, {123, 400}, {169, 322},
{220, 311}, {231, 268}, {243, 280}, {95, 435}, {251, 279}, {153, 373}, {152,
372}, {114, 414}, {106, 390}, {4, 489}, {156, 369}, {59, 470}, {75, 422}, {98,
396}, {115, 412}, {210, 317}, {133, 373}, {160, 336}, {73, 440}, {184, 330},
{42, 473}, {252, 271}, {132, 375}, {87, 420}, {169, 346}, {200, 315}, {68, 432},
{145, 357}, {136, 380}, {92, 424}, {206, 314}, {237, 281}, {24, 493}, {49, 452},
{234, 287}, {6, 496}, {242, 260}, {135, 368}, {18, 490}, {249, 257}, {66, 442},
{166, 350}, {188, 324}, {228, 284}, {238, 278}, {242, 266}, {51, 458}, {114,
395}, {85, 428}, {103, 414}, {226, 283}, {34, 472}, {44, 471}, {251, 256}, {25,
485}, {30, 482}, {101, 409}, {166, 346}, {174, 338}, {224, 284}, {104, 405},
{164, 345}, {115, 398}, {168, 341}, {221, 288}, {124, 386}, {168, 342}, {10,
501}, {36, 475}, {177, 334}, {241, 270} }>;
(II) A more general form is to represent the graph as the orbit of {250, 254}
under the group generated by the following permutations:
a: (1, 2, 4, 7, 11, 16, 20)(3, 5, 9, 13, 17, 21, 24)(6, 10, 14, 18, 22, 25,
27)(8, 12, 15, 19, 23, 26, 28)(29, 196, 231, 218, 63, 90, 152)(30, 173, 237,
222, 67, 96, 153)(31, 172, 235, 221, 69, 94, 151)(32, 180, 242, 199, 72, 97,
159)(33, 178, 243, 198, 73, 95, 158)(34, 177, 240, 224, 74, 99, 157)(35, 179,
246, 204, 76, 103, 160)(36, 175, 241, 223, 75, 98, 156)(37, 181, 247, 202, 77,
102, 161)(38, 182, 244, 201, 78, 101, 162)(39, 185, 250, 203, 57, 104, 164)(40,
183, 245, 200, 79, 100, 163)(41, 184, 249, 205, 80, 105, 141)(42, 187, 248, 206,
81, 106, 166)(43, 186, 225, 208, 82, 107, 165)(44, 190, 227, 209, 58, 108,
167)(45, 191, 226, 207, 59, 85, 168)(46, 188, 252, 211, 83, 110, 142)(47, 189,
251, 210, 84, 109, 143)(48, 193, 232, 214, 60, 111, 146)(49, 194, 230, 215, 61,
112, 148)(50, 169, 229, 212, 62, 86, 144)(51, 192, 228, 213, 64, 87, 145)(52,
195, 233, 219, 65, 92, 150)(53, 171, 234, 216, 66, 88, 149)(54, 170, 236, 217,
68, 89, 147)(55, 176, 239, 220, 70, 93, 155)(56, 174, 238, 197, 71, 91,
154)(113, 133, 129, 126, 124, 116, 139)(114, 137, 135, 131, 123, 121, 118)(115,
138, 134, 130, 125, 119, 120)(117, 140, 136, 132, 128, 127, 122)(253, 268, 364,
284, 474, 423, 476)(254, 363, 263, 301, 370, 277, 453)(255, 286, 416, 406, 311,
477, 259)(256, 439, 314, 266, 390, 346, 445)(257, 279, 326, 475, 478, 358,
330)(258, 446, 464, 320, 421, 427, 299)(260, 456, 281, 333, 288, 488, 497)(261,
414, 402, 484, 462, 495, 483)(262, 356, 353, 371, 349, 381, 452)(264, 369, 270,
410, 307, 396, 422)(265, 325, 306, 436, 309, 271, 273)(267, 403, 408, 413, 335,
389, 493)(269, 502, 428, 491, 344, 380, 283)(272, 470, 327, 342, 447, 341,
359)(274, 482, 469, 375, 319, 336, 451)(275, 383, 355, 392, 297, 324, 304)(276,
313, 348, 305, 461, 404, 310)(278, 494, 412, 323, 459, 442, 290)(280, 440, 354,
435, 285, 415, 386)(282, 334, 425, 398, 498, 332, 472)(287, 450, 503, 463, 417,
338, 368)(289, 345, 481, 411, 504, 437, 443)(291, 318, 394, 312, 405, 429,
321)(292, 361, 466, 399, 457, 384, 487)(293, 329, 362, 441, 391, 300, 352)(294,
485, 360, 366, 467, 374, 490)(295, 328, 486, 343, 433, 431, 471)(296, 430, 388,
340, 496, 420, 357)(298, 419, 400, 480, 455, 395, 322)(302, 473, 382, 316, 432,
387, 378)(303, 373, 397, 424, 500, 376, 418)(308, 454, 489, 448, 331, 468,
426)(315, 460, 465, 492, 347, 367, 385)(317, 409, 438, 365, 434, 449, 377)(337,
407, 479, 372, 351, 350, 444)(339, 501, 401, 379, 499, 393, 458) (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 **************
b: (2, 28)(3, 27)(4, 6)(5, 8)(7, 9)(10, 12)(11, 13)(14, 15)(20, 22)(21, 23)(29,
57)(30, 84)(31, 83)(32, 62)(33, 64)(34, 60)(35, 65)(36, 61)(37, 63)(38, 68)(39,
69)(40, 66)(41, 67)(42, 71)(43, 70)(44, 72)(45, 73)(46, 74)(47, 75)(48, 78)(49,
79)(50, 76)(51, 77)(52, 80)(53, 81)(54, 82)(55, 59)(56, 58)(85, 113)(86,
140)(87, 139)(88, 118)(89, 120)(90, 116)(91, 121)(92, 117)(93, 119)(94, 124)(95,
125)(96, 122)(97, 123)(98, 127)(99, 126)(100, 128)(101, 129)(102, 130)(103,
131)(104, 134)(105, 135)(106, 132)(107, 133)(108, 136)(109, 137)(110, 138)(111,
115)(112, 114)(141, 169)(142, 196)(143, 195)(144, 174)(145, 176)(146, 172)(147,
177)(148, 173)(149, 175)(150, 180)(151, 181)(152, 178)(153, 179)(154, 183)(155,
182)(156, 184)(157, 185)(158, 186)(159, 187)(160, 190)(161, 191)(162, 188)(163,
189)(164, 192)(165, 193)(166, 194)(167, 171)(168, 170)(197, 233)(198, 235)(199,
237)(200, 242)(201, 243)(202, 240)(203, 244)(204, 241)(205, 245)(206, 246)(207,
250)(208, 247)(209, 249)(210, 248)(211, 225)(212, 251)(213, 252)(214, 226)(215,
227)(216, 229)(217, 228)(218, 232)(219, 230)(220, 231)(221, 236)(222, 234)(223,
238)(224, 239)(253, 392)(254, 269)(255, 403)(257, 492)(259, 341)(260, 315)(261,
395)(262, 433)(263, 351)(264, 371)(265, 389)(266, 338)(267, 399)(268, 311)(270,
483)(271, 401)(272, 318)(273, 461)(275, 313)(276, 435)(277, 488)(278, 410)(279,
370)(280, 468)(281, 471)(282, 384)(283, 343)(284, 360)(285, 496)(286, 501)(287,
319)(288, 382)(289, 332)(290, 455)(291, 472)(292, 379)(293, 456)(294, 342)(295,
317)(296, 490)(297, 398)(298, 372)(299, 336)(300, 475)(301, 459)(302, 484)(303,
428)(304, 340)(305, 487)(306, 454)(307, 434)(308, 443)(309, 420)(310, 477)(312,
335)(314, 482)(316, 326)(320, 469)(321, 458)(322, 478)(323, 329)(324, 493)(325,
498)(327, 504)(328, 495)(330, 422)(331, 394)(333, 400)(334, 374)(337, 486)(339,
345)(344, 480)(346, 427)(347, 442)(348, 467)(349, 441)(350, 362)(352, 414)(353,
465)(354, 447)(355, 470)(356, 378)(357, 416)(358, 418)(359, 457)(361, 426)(363,
449)(364, 429)(365, 432)(366, 489)(367, 380)(368, 421)(369, 444)(373, 462)(375,
390)(376, 479)(377, 419)(381, 424)(383, 448)(385, 407)(386, 413)(387, 494)(388,
466)(391, 438)(393, 485)(396, 502)(397, 409)(402, 460)(404, 405)(406, 425)(408,
481)(411, 476)(412, 431)(415, 423)(417, 464)(430, 437)(436, 474)(440, 499)(445,
450)(452, 453)(473, 491)(497, 500)
c: (2, 3)(4, 6)(5, 8)(7, 10)(9, 12)(11, 15)(13, 14)(16, 17)(18, 19)(20, 23)(21,
22)(27, 28)(29, 85)(30, 86)(31, 87)(32, 88)(33, 89)(34, 90)(35, 91)(36, 92)(37,
93)(38, 94)(39, 95)(40, 96)(41, 97)(42, 98)(43, 99)(44, 100)(45, 101)(46,
102)(47, 103)(48, 104)(49, 105)(50, 106)(51, 107)(52, 108)(53, 109)(54, 110)(55,
111)(56, 112)(57, 113)(58, 114)(59, 115)(60, 116)(61, 117)(62, 118)(63, 119)(64,
120)(65, 121)(66, 122)(67, 123)(68, 124)(69, 125)(70, 126)(71, 127)(72, 128)(73,
129)(74, 130)(75, 131)(76, 132)(77, 133)(78, 134)(79, 135)(80, 136)(81, 137)(82,
138)(83, 139)(84, 140)(141, 197)(142, 198)(143, 199)(144, 200)(145, 201)(146,
202)(147, 203)(148, 204)(149, 205)(150, 206)(151, 207)(152, 208)(153, 209)(154,
210)(155, 211)(156, 212)(157, 213)(158, 214)(159, 215)(160, 216)(161, 217)(162,
218)(163, 219)(164, 220)(165, 221)(166, 222)(167, 223)(168, 224)(169, 233)(170,
239)(171, 238)(172, 240)(173, 241)(174, 242)(175, 245)(176, 243)(177, 244)(178,
247)(179, 249)(180, 246)(181, 250)(182, 225)(183, 248)(184, 251)(185, 252)(186,
226)(187, 227)(188, 232)(189, 230)(190, 229)(191, 228)(192, 231)(193, 236)(194,
234)(195, 237)(196, 235)(253, 468)(254, 315)(255, 275)(256, 258)(257, 462)(259,
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