Graph forms
for C4 [ 272, 12 ] = PS(8,68;13)
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On this page are computer-accessible forms for the graph C4[ 272, 12 ] =
PS(8,68;13).
(I) Following is a form readable by MAGMA:
g:=Graph<272|{ {64, 71}, {200, 207}, {65, 72}, {67, 74}, {199, 206}, {66, 73},
{128, 139}, {132, 143}, {198, 205}, {129, 140}, {131, 142}, {68, 75}, {130,
141}, {96, 112}, {238, 254}, {237, 253}, {236, 252}, {235, 251}, {234, 250},
{233, 249}, {232, 248}, {231, 247}, {230, 246}, {229, 245}, {228, 244}, {102,
118}, {101, 117}, {100, 116}, {99, 115}, {98, 114}, {97, 113}, {224, 240}, {225,
241}, {226, 242}, {227, 243}, {96, 113}, {238, 255}, {236, 253}, {234, 251},
{232, 249}, {230, 247}, {228, 245}, {102, 119}, {100, 117}, {98, 115}, {224,
241}, {226, 243}, {97, 114}, {237, 254}, {233, 250}, {229, 246}, {101, 118},
{225, 242}, {133, 144}, {135, 146}, {99, 116}, {235, 252}, {134, 145}, {227,
244}, {128, 152}, {129, 153}, {130, 154}, {131, 155}, {132, 156}, {133, 157},
{134, 158}, {135, 159}, {201, 208}, {203, 210}, {136, 147}, {202, 209}, {64,
92}, {67, 95}, {66, 94}, {65, 93}, {192, 220}, {193, 221}, {194, 222}, {195,
223}, {204, 211}, {231, 248}, {2, 35}, {4, 37}, {6, 39}, {8, 41}, {10, 43}, {12,
45}, {14, 47}, {16, 49}, {18, 51}, {20, 53}, {22, 55}, {24, 57}, {26, 59}, {28,
61}, {30, 63}, {138, 171}, {140, 173}, {142, 175}, {144, 177}, {146, 179}, {148,
181}, {150, 183}, {152, 185}, {154, 187}, {156, 189}, {158, 191}, {1, 35}, {4,
38}, {5, 39}, {8, 42}, {9, 43}, {12, 46}, {13, 47}, {16, 50}, {17, 51}, {20,
54}, {21, 55}, {24, 58}, {25, 59}, {28, 62}, {29, 63}, {137, 171}, {140, 174},
{141, 175}, {144, 178}, {145, 179}, {148, 182}, {149, 183}, {152, 186}, {153,
187}, {156, 190}, {157, 191}, {5, 38}, {9, 42}, {13, 46}, {17, 50}, {21, 54},
{25, 58}, {29, 62}, {141, 174}, {145, 178}, {149, 182}, {153, 186}, {157, 190},
{68, 96}, {196, 224}, {197, 225}, {198, 226}, {199, 227}, {204, 232}, {2, 36},
{3, 37}, {10, 44}, {11, 45}, {18, 52}, {19, 53}, {26, 60}, {27, 61}, {138, 172},
{139, 173}, {146, 180}, {147, 181}, {154, 188}, {155, 189}, {3, 36}, {11, 44},
{19, 52}, {27, 60}, {139, 172}, {147, 180}, {155, 188}, {136, 160}, {192, 233},
{194, 235}, {196, 237}, {193, 234}, {197, 238}, {200, 228}, {201, 229}, {202,
230}, {203, 231}, {6, 40}, {7, 41}, {22, 56}, {23, 57}, {150, 184}, {151, 185},
{7, 40}, {95, 112}, {23, 56}, {151, 184}, {195, 236}, {223, 240}, {87, 103},
{95, 111}, {94, 110}, {93, 109}, {92, 108}, {91, 107}, {90, 106}, {89, 105},
{88, 104}, {223, 239}, {86, 103}, {94, 111}, {92, 109}, {90, 107}, {88, 105},
{222, 239}, {69, 119}, {77, 127}, {76, 126}, {73, 123}, {72, 122}, {205, 255},
{72, 123}, {93, 110}, {89, 106}, {76, 127}, {73, 124}, {75, 126}, {74, 124},
{75, 125}, {74, 125}, {91, 108}, {69, 120}, {71, 122}, {14, 48}, {71, 121}, {70,
120}, {15, 49}, {142, 176}, {143, 177}, {15, 48}, {87, 104}, {70, 121}, {143,
176}, {35, 97}, {38, 100}, {39, 101}, {171, 233}, {174, 236}, {175, 237}, {1,
68}, {137, 204}, {36, 98}, {37, 99}, {172, 234}, {173, 235}, {40, 102}, {55,
96}, {183, 224}, {191, 232}, {56, 97}, {58, 99}, {60, 101}, {184, 225}, {186,
227}, {188, 229}, {190, 231}, {57, 98}, {61, 102}, {185, 226}, {189, 230}, {30,
64}, {31, 65}, {158, 192}, {159, 193}, {176, 238}, {31, 64}, {59, 100}, {159,
192}, {187, 228}, {32, 65}, {34, 67}, {160, 193}, {162, 195}, {164, 197}, {166,
199}, {168, 201}, {170, 203}, {32, 66}, {33, 67}, {160, 194}, {161, 195}, {164,
198}, {165, 199}, {168, 202}, {169, 203}, {33, 66}, {161, 194}, {165, 198},
{169, 202}, {44, 72}, {63, 91}, {62, 90}, {61, 89}, {45, 73}, {46, 74}, {47,
75}, {52, 80}, {53, 81}, {54, 82}, {55, 83}, {60, 88}, {180, 208}, {181, 209},
{182, 210}, {183, 211}, {188, 216}, {189, 217}, {190, 218}, {191, 219}, {34,
68}, {162, 196}, {163, 197}, {170, 204}, {163, 196}, {36, 77}, {38, 79}, {48,
89}, {50, 91}, {52, 93}, {54, 95}, {176, 217}, {178, 219}, {180, 221}, {182,
223}, {37, 78}, {49, 90}, {53, 94}, {177, 218}, {181, 222}, {41, 69}, {42, 70},
{43, 71}, {56, 84}, {57, 85}, {58, 86}, {59, 87}, {184, 212}, {185, 213}, {186,
214}, {187, 215}, {166, 200}, {167, 201}, {35, 76}, {51, 92}, {167, 200}, {179,
220}, {39, 80}, {47, 88}, {175, 216}, {40, 81}, {63, 70}, {42, 83}, {44, 85},
{46, 87}, {172, 213}, {174, 215}, {41, 82}, {62, 69}, {45, 86}, {173, 214}, {48,
76}, {49, 77}, {50, 78}, {51, 79}, {177, 205}, {178, 206}, {179, 207}, {43, 84},
{171, 212}, {103, 161}, {111, 169}, {110, 168}, {104, 162}, {109, 167}, {108,
166}, {105, 163}, {77, 128}, {79, 130}, {78, 128}, {107, 165}, {106, 164}, {79,
129}, {78, 129}, {80, 130}, {85, 135}, {84, 134}, {81, 131}, {80, 131}, {123,
168}, {119, 164}, {115, 160}, {84, 135}, {81, 132}, {124, 169}, {118, 163},
{116, 161}, {83, 134}, {32, 246}, {83, 133}, {82, 132}, {33, 247}, {82, 133},
{125, 170}, {117, 162}, {34, 248}, {112, 170}, {85, 136}, {122, 167}, {120,
165}, {86, 136}, {121, 166}, {12, 239}, {16, 243}, {20, 247}, {24, 251}, {28,
255}, {17, 244}, {19, 246}, {25, 252}, {27, 254}, {18, 245}, {26, 253}, {120,
144}, {127, 151}, {126, 150}, {125, 149}, {124, 148}, {123, 147}, {122, 146},
{121, 145}, {26, 240}, {27, 241}, {30, 244}, {31, 245}, {21, 248}, {114, 159},
{112, 157}, {23, 250}, {28, 242}, {29, 243}, {22, 249}, {113, 158}, {103, 148},
{111, 156}, {107, 152}, {108, 153}, {127, 138}, {110, 155}, {25, 239}, {109,
154}, {126, 137}, {1, 249}, {119, 143}, {118, 142}, {117, 141}, {116, 140},
{115, 139}, {114, 138}, {113, 137}, {2, 250}, {3, 251}, {4, 252}, {5, 253}, {6,
254}, {7, 255}, {13, 240}, {106, 151}, {104, 149}, {15, 242}, {14, 241}, {105,
150}, {2, 263}, {8, 269}, {10, 271}, {1, 262}, {9, 270}, {8, 256}, {9, 257},
{10, 258}, {11, 259}, {12, 260}, {13, 261}, {14, 262}, {15, 263}, {24, 272}, {3,
264}, {7, 268}, {4, 265}, {6, 267}, {5, 266}, {16, 264}, {17, 265}, {18, 266},
{19, 267}, {20, 268}, {21, 269}, {22, 270}, {23, 271}, {11, 272}, {29, 256},
{31, 258}, {30, 257}, {32, 259}, {33, 260}, {34, 261}, {205, 256}, {207, 258},
{221, 272}, {206, 256}, {207, 257}, {222, 272}, {206, 257}, {208, 258}, {209,
259}, {212, 262}, {213, 263}, {216, 266}, {217, 267}, {220, 270}, {221, 271},
{208, 259}, {212, 263}, {216, 267}, {220, 271}, {209, 260}, {211, 262}, {217,
268}, {219, 270}, {210, 260}, {211, 261}, {218, 268}, {219, 269}, {210, 261},
{218, 269}, {213, 264}, {215, 266}, {214, 264}, {215, 265}, {214, 265} }>;
(II) A more general form is to represent the graph as the orbit of {64, 71}
under the group generated by the following permutations:
a: (2, 14, 34, 22)(3, 27, 33, 9)(4, 6, 32, 30)(5, 19, 31, 17)(7, 11, 29, 25)(8,
24, 28, 12)(10, 16, 26, 20)(13, 21, 23, 15)(35, 262, 68, 249)(36, 241, 67,
270)(37, 254, 66, 257)(38, 267, 65, 244)(39, 246, 64, 265)(40, 259, 63, 252)(41,
272, 62, 239)(42, 251, 61, 260)(43, 264, 60, 247)(44, 243, 59, 268)(45, 256, 58,
255)(46, 269, 57, 242)(47, 248, 56, 263)(48, 261, 55, 250)(49, 240, 54, 271)(50,
253, 53, 258)(51, 266, 52, 245)(69, 222)(70, 235, 102, 209)(71, 214, 101,
230)(72, 227, 100, 217)(73, 206, 99, 238)(74, 219, 98, 225)(75, 232, 97,
212)(76, 211, 96, 233)(77, 224, 95, 220)(78, 237, 94, 207)(79, 216, 93, 228)(80,
229, 92, 215)(81, 208, 91, 236)(82, 221, 90, 223)(83, 234, 89, 210)(84, 213, 88,
231)(85, 226, 87, 218)(86, 205)(103, 177, 136, 198)(104, 190, 135, 185)(105,
203, 134, 172)(106, 182, 133, 193)(107, 195, 132, 180)(108, 174, 131, 201)(109,
187, 130, 188)(110, 200, 129, 175)(111, 179, 128, 196)(112, 192, 127, 183)(113,
171, 126, 204)(114, 184, 125, 191)(115, 197, 124, 178)(116, 176, 123, 199)(117,
189, 122, 186)(118, 202, 121, 173)(119, 181, 120, 194)(138, 150, 170, 158)(139,
163, 169, 145)(140, 142, 168, 166)(141, 155, 167, 153)(143, 147, 165, 161)(144,
160, 164, 148)(146, 152, 162, 156)(149, 157, 159, 151) (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: (1, 35, 97, 113, 137, 171, 233, 249)(2, 56, 96, 126, 138, 192, 232, 262)(3,
43, 95, 105, 139, 179, 231, 241)(4, 64, 94, 118, 140, 200, 230, 254)(5, 51, 93,
131, 141, 187, 229, 267)(6, 38, 92, 110, 142, 174, 228, 246)(7, 59, 91, 123,
143, 195, 227, 259)(8, 46, 90, 136, 144, 182, 226, 272)(9, 67, 89, 115, 145,
203, 225, 251)(10, 54, 88, 128, 146, 190, 224, 264)(11, 41, 87, 107, 147, 177,
223, 243)(12, 62, 86, 120, 148, 198, 222, 256)(13, 49, 85, 133, 149, 185, 221,
269)(14, 36, 84, 112, 150, 172, 220, 248)(15, 57, 83, 125, 151, 193, 219,
261)(16, 44, 82, 104, 152, 180, 218, 240)(17, 65, 81, 117, 153, 201, 217,
253)(18, 52, 80, 130, 154, 188, 216, 266)(19, 39, 79, 109, 155, 175, 215,
245)(20, 60, 78, 122, 156, 196, 214, 258)(21, 47, 77, 135, 157, 183, 213,
271)(22, 68, 76, 114, 158, 204, 212, 250)(23, 55, 75, 127, 159, 191, 211,
263)(24, 42, 74, 106, 160, 178, 210, 242)(25, 63, 73, 119, 161, 199, 209,
255)(26, 50, 72, 132, 162, 186, 208, 268)(27, 37, 71, 111, 163, 173, 207,
247)(28, 58, 70, 124, 164, 194, 206, 260)(29, 45, 69, 103, 165, 181, 205,
239)(30, 66, 102, 116, 166, 202, 238, 252)(31, 53, 101, 129, 167, 189, 237,
265)(32, 40, 100, 108, 168, 176, 236, 244)(33, 61, 99, 121, 169, 197, 235,
257)(34, 48, 98, 134, 170, 184, 234, 270)
c: (2, 34)(3, 33)(4, 32)(5, 31)(6, 30)(7, 29)(8, 28)(9, 27)(10, 26)(11, 25)(12,
24)(13, 23)(14, 22)(15, 21)(16, 20)(17, 19)(35, 68)(36, 67)(37, 66)(38, 65)(39,
64)(40, 63)(41, 62)(42, 61)(43, 60)(44, 59)(45, 58)(46, 57)(47, 56)(48, 55)(49,
54)(50, 53)(51, 52)(70, 102)(71, 101)(72, 100)(73, 99)(74, 98)(75, 97)(76,
96)(77, 95)(78, 94)(79, 93)(80, 92)(81, 91)(82, 90)(83, 89)(84, 88)(85, 87)(103,
136)(104, 135)(105, 134)(106, 133)(107, 132)(108, 131)(109, 130)(110, 129)(111,
128)(112, 127)(113, 126)(114, 125)(115, 124)(116, 123)(117, 122)(118, 121)(119,
120)(138, 170)(139, 169)(140, 168)(141, 167)(142, 166)(143, 165)(144, 164)(145,
163)(146, 162)(147, 161)(148, 160)(149, 159)(150, 158)(151, 157)(152, 156)(153,
155)(171, 204)(172, 203)(173, 202)(174, 201)(175, 200)(176, 199)(177, 198)(178,
197)(179, 196)(180, 195)(181, 194)(182, 193)(183, 192)(184, 191)(185, 190)(186,
189)(187, 188)(206, 238)(207, 237)(208, 236)(209, 235)(210, 234)(211, 233)(212,
232)(213, 231)(214, 230)(215, 229)(216, 228)(217, 227)(218, 226)(219, 225)(220,
224)(221, 223)(239, 272)(240, 271)(241, 270)(242, 269)(243, 268)(244, 267)(245,
266)(246, 265)(247, 264)(248, 263)(249, 262)(250, 261)(251, 260)(252, 259)(253,
258)(254, 257)(255, 256)
d: (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)
C4[ 272, 12 ]
272
-1 35 68 249 262
-2 35 36 250 263
-3 264 36 37 251
-4 265 37 38 252
-5 253 266 38 39
-6 254 267 39 40
-7 255 268 40 41
-8 256 269 41 42
-9 257 270 42 43
-10 44 258 271 43
-11 44 45 259 272
-12 45 46 260 239
-13 46 47 261 240
-14 47 48 262 241
-15 242 48 49 263
-16 264 243 49 50
-17 265 244 50 51
-18 266 245 51 52
-19 267 246 52 53
-20 268 247 53 54
-21 55 269 248 54
-22 55 56 270 249
-23 56 57 271 250
-24 57 58 272 251
-25 58 59 239 252
-26 253 59 60 240
-27 254 60 61 241
-28 242 255 61 62
-29 243 256 62 63
-30 244 257 63 64
-31 245 258 64 65
-32 66 246 259 65
-33 66 67 247 260
-34 67 68 248 261
-35 1 2 97 76
-36 77 2 3 98
-37 99 78 3 4
-38 100 79 4 5
-39 101 80 5 6
-40 102 81 6 7
-41 69 82 7 8
-42 70 83 8 9
-43 71 84 9 10
-44 11 72 85 10
-45 11 12 73 86
-46 12 13 74 87
-47 88 13 14 75
-48 89 14 15 76
-49 77 90 15 16
-50 78 91 16 17
-51 79 92 17 18
-52 80 93 18 19
-53 81 94 19 20
-54 82 95 20 21
-55 22 83 96 21
-56 22 23 84 97
-57 23 24 85 98
-58 99 24 25 86
-59 100 25 26 87
-60 88 101 26 27
-61 89 102 27 28
-62 90 69 28 29
-63 91 70 29 30
-64 92 71 30 31
-65 93 72 31 32
-66 33 94 73 32
-67 33 34 95 74
-68 1 34 96 75
-69 62 41 119 120
-70 121 63 42 120
-71 121 122 64 43
-72 44 122 123 65
-73 66 45 123 124
-74 67 46 124 125
-75 68 47 125 126
-76 35 48 126 127
-77 36 49 127 128
-78 37 50 128 129
-79 38 51 129 130
-80 39 52 130 131
-81 132 40 53 131
-82 132 133 41 54
-83 55 133 134 42
-84 56 134 135 43
-85 44 57 135 136
-86 45 58 103 136
-87 46 59 103 104
-88 47 60 104 105
-89 48 61 105 106
-90 49 62 106 107
-91 50 63 107 108
-92 51 64 108 109
-93 110 52 65 109
-94 66 110 111 53
-95 67 111 112 54
-96 55 68 112 113
-97 56 35 113 114
-98 57 36 114 115
-99 58 37 115 116
-100 59 38 116 117
-101 60 39 117 118
-102 61 40 118 119
-103 148 161 86 87
-104 88 149 162 87
-105 88 89 150 163
-106 89 90 151 164
-107 165 90 91 152
-108 166 91 92 153
-109 154 167 92 93
-110 155 168 93 94
-111 156 169 94 95
-112 157 170 95 96
-113 158 137 96 97
-114 159 138 97 98
-115 99 160 139 98
-116 99 100 161 140
-117 100 101 162 141
-118 101 102 163 142
-119 143 69 102 164
-120 165 144 69 70
-121 166 145 70 71
-122 167 146 71 72
-123 168 147 72 73
-124 169 148 73 74
-125 170 149 74 75
-126 137 150 75 76
-127 77 138 151 76
-128 77 78 139 152
-129 78 79 140 153
-130 154 79 80 141
-131 155 80 81 142
-132 143 156 81 82
-133 144 157 82 83
-134 145 158 83 84
-135 146 159 84 85
-136 147 160 85 86
-137 113 126 171 204
-138 114 127 171 172
-139 115 128 172 173
-140 116 129 173 174
-141 117 130 174 175
-142 176 118 131 175
-143 132 176 177 119
-144 133 177 178 120
-145 121 134 178 179
-146 122 135 179 180
-147 123 136 180 181
-148 124 103 181 182
-149 125 104 182 183
-150 126 105 183 184
-151 127 106 184 185
-152 128 107 185 186
-153 187 129 108 186
-154 187 188 130 109
-155 110 188 189 131
-156 132 111 189 190
-157 133 112 190 191
-158 134 113 191 192
-159 135 114 192 193
-160 136 115 193 194
-161 103 116 194 195
-162 104 117 195 196
-163 105 118 196 197
-164 198 106 119 197
-165 198 199 107 120
-166 121 199 200 108
-167 122 200 201 109
-168 110 123 201 202
-169 111 124 202 203
-170 112 125 203 204
-171 233 212 137 138
-172 234 213 138 139
-173 235 214 139 140
-174 236 215 140 141
-175 237 216 141 142
-176 143 238 217 142
-177 143 144 205 218
-178 144 145 206 219
-179 220 145 146 207
-180 221 146 147 208
-181 209 222 147 148
-182 210 223 148 149
-183 211 224 149 150
-184 212 225 150 151
-185 213 226 151 152
-186 214 227 152 153
-187 154 215 228 153
-188 154 155 216 229
-189 155 156 217 230
-190 231 156 157 218
-191 232 157 158 219
-192 220 233 158 159
-193 221 234 159 160
-194 222 235 160 161
-195 223 236 161 162
-196 224 237 162 163
-197 225 238 163 164
-198 165 226 205 164
-199 165 166 227 206
-200 166 167 228 207
-201 167 168 229 208
-202 209 168 169 230
-203 231 210 169 170
-204 232 211 137 170
-205 198 177 255 256
-206 199 178 256 257
-207 200 179 257 258
-208 201 180 258 259
-209 202 181 259 260
-210 203 182 260 261
-211 204 183 261 262
-212 171 184 262 263
-213 264 172 185 263
-214 264 265 173 186
-215 187 265 266 174
-216 188 266 267 175
-217 176 189 267 268
-218 177 190 268 269
-219 178 191 269 270
-220 179 192 270 271
-221 180 193 271 272
-222 181 194 239 272
-223 182 195 239 240
-224 183 196 240 241
-225 242 184 197 241
-226 198 242 243 185
-227 199 243 244 186
-228 187 200 244 245
-229 188 201 245 246
-230 189 202 246 247
-231 190 203 247 248
-232 191 204 248 249
-233 192 171 249 250
-234 193 172 250 251
-235 194 173 251 252
-236 253 195 174 252
-237 253 254 196 175
-238 176 254 255 197
-239 12 222 25 223
-240 13 223 26 224
-241 14 224 27 225
-242 15 225 28 226
-243 16 226 29 227
-244 17 227 30 228
-245 18 228 31 229
-246 19 229 32 230
-247 33 231 20 230
-248 231 34 232 21
-249 22 1 232 233
-250 23 2 233 234
-251 24 3 234 235
-252 25 4 235 236
-253 26 5 236 237
-254 27 6 237 238
-255 28 7 205 238
-256 29 205 8 206
-257 30 206 9 207
-258 31 207 10 208
-259 11 209 32 208
-260 33 209 12 210
-261 34 210 13 211
-262 1 211 14 212
-263 2 212 15 213
-264 3 213 16 214
-265 4 214 17 215
-266 5 215 18 216
-267 6 216 19 217
-268 7 217 20 218
-269 8 218 21 219
-270 22 220 9 219
-271 220 23 221 10
-272 11 221 24 222
0