Parity checks
X-checks 456 (max weight 4) · Z-checks 456 (max weight 4)
H_X (456 checks, sparse supports)
[0, 1]
[2, 3]
[5, 6]
[7, 8]
[10, 11]
[12, 13]
[15, 16]
[17, 18]
[20, 21]
[22, 23]
[25, 26]
[27, 28]
[30, 31]
[32, 33]
[1, 2, 36, 37]
[3, 4, 38, 39]
[6, 7, 41, 42]
[8, 9, 43, 44]
[11, 12, 46, 47]
[13, 14, 48, 49]
[16, 17, 51, 52]
[18, 19, 53, 54]
[21, 22, 56, 57]
[23, 24, 58, 59]
[26, 27, 61, 62]
[28, 29, 63, 64]
[31, 32, 66, 67]
[33, 34, 68, 69]
[35, 36, 70, 71]
[37, 38, 72, 73]
[40, 41, 75, 76]
[42, 43, 77, 78]
[45, 46, 80, 81]
[47, 48, 82, 83]
[50, 51, 85, 86]
[52, 53, 87, 88]
[55, 56, 90, 91]
[57, 58, 92, 93]
[60, 61, 95, 96]
[62, 63, 97, 98]
[65, 66, 100, 101]
[67, 68, 102, 103]
[71, 72, 106, 107]
[73, 74, 108, 109]
[76, 77, 112, 113]
[78, 79, 114, 115]
[81, 82, 118, 119]
[83, 84, 120, 121]
[86, 87, 124, 125]
[88, 89, 126, 127]
[91, 92, 130, 131]
[93, 94, 132, 133]
[96, 97, 136, 137]
[98, 99, 138, 139]
[101, 102, 142, 143]
[103, 104, 144, 145]
[105, 106, 146, 147]
[107, 108, 148, 149]
[109, 110, 150, 151]
[111, 112, 152, 153]
[113, 114, 154, 155]
[115, 116, 156, 157]
[117, 118, 158, 159]
[119, 120, 160, 161]
[121, 122, 162, 163]
[123, 124, 164, 165]
[125, 126, 166, 167]
[127, 128, 168, 169]
[129, 130, 170, 171]
[131, 132, 172, 173]
[133, 134, 174, 175]
[135, 136, 176, 177]
[137, 138, 178, 179]
[139, 140, 180, 181]
[141, 142, 182, 183]
[143, 144, 184, 185]
[147, 148]
[149, 150, 187, 188]
[151, 152, 189, 190]
[153, 154, 191]
[155, 156, 192, 193]
[157, 158, 194, 195]
[159, 160, 196]
[161, 162, 197, 198]
[163, 164, 199, 200]
[165, 166, 201]
[167, 168, 202, 203]
[169, 170, 204, 205]
[171, 172, 206]
[173, 174, 207, 208]
[175, 176, 209, 210]
[177, 178, 211]
[179, 180, 212, 213]
[181, 182, 214, 215]
[183, 184, 216]
[185, 186]
[217, 218]
[187, 219, 220]
[188, 189, 221, 222]
[190, 191, 223, 224]
[192, 225, 226]
[193, 194, 227, 228]
[195, 196, 229, 230]
[197, 231, 232]
[198, 199, 233, 234]
[200, 201, 235, 236]
[202, 237, 238]
[203, 204, 239, 240]
[205, 206, 241, 242]
[207, 243, 244]
[208, 209, 245, 246]
[210, 211, 247, 248]
[212, 249, 250]
[213, 214, 251, 252]
[215, 216, 253, 254]
[255, 256]
[218, 219, 259, 260]
[220, 221, 261, 262]
[222, 223, 263, 264]
[224, 225, 265, 266]
[226, 227, 267, 268]
[228, 229, 269, 270]
[230, 231, 271, 272]
[232, 233, 273, 274]
[234, 235, 275, 276]
[236, 237, 277, 278]
[238, 239, 279, 280]
[240, 241, 281, 282]
[242, 243, 283, 284]
[244, 245, 285, 286]
[246, 247, 287, 288]
[248, 249, 289, 290]
[250, 251, 291, 292]
[252, 253, 293, 294]
[254, 255, 295, 296]
[256, 257, 297, 298]
[258, 259, 299, 300]
[260, 261, 301, 302]
[264, 265, 304, 305]
[266, 267, 306, 307]
[270, 271, 309, 310]
[272, 273, 311, 312]
[276, 277, 314, 315]
[278, 279, 316, 317]
[282, 283, 319, 320]
[284, 285, 321, 322]
[288, 289, 324, 325]
[290, 291, 326, 327]
[294, 295, 329, 330]
[296, 297, 331, 332]
[300, 301, 335, 336]
[302, 303, 337, 338]
[305, 306, 341, 342]
[307, 308, 343, 344]
[310, 311, 347, 348]
[312, 313, 349, 350]
[315, 316, 353, 354]
[317, 318, 355, 356]
[320, 321, 359, 360]
[322, 323, 361, 362]
[325, 326, 365, 366]
[327, 328, 367, 368]
[330, 331, 371, 372]
[332, 333, 373, 374]
[334, 335, 375, 376]
[336, 337, 377, 378]
[338, 339, 379, 380]
[340, 341, 381, 382]
[342, 343, 383, 384]
[344, 345, 385, 386]
[346, 347, 387, 388]
[348, 349, 389, 390]
[350, 351, 391, 392]
[352, 353, 393, 394]
[354, 355, 395, 396]
[356, 357, 397, 398]
[358, 359, 399, 400]
[360, 361, 401, 402]
[362, 363, 403, 404]
[364, 365, 405, 406]
[366, 367, 407, 408]
[368, 369, 409, 410]
[370, 371, 411, 412]
[372, 373, 413, 414]
[376, 377]
[378, 379, 416, 417]
[380, 381, 418, 419]
[382, 383, 420]
[384, 385, 421, 422]
[386, 387, 423, 424]
[388, 389, 425]
[390, 391, 426, 427]
[392, 393, 428, 429]
[394, 395, 430]
[396, 397, 431, 432]
[398, 399, 433, 434]
[400, 401, 435]
[402, 403, 436, 437]
[404, 405, 438, 439]
[406, 407, 440]
[408, 409, 441, 442]
[410, 411, 443, 444]
[412, 413, 445]
[414, 415]
[446, 447]
[416, 448, 449]
[417, 418, 450, 451]
[419, 420, 452, 453]
[421, 454, 455]
[422, 423, 456, 457]
[424, 425, 458, 459]
[426, 460, 461]
[427, 428, 462, 463]
[429, 430, 464, 465]
[431, 466, 467]
[432, 433, 468, 469]
[434, 435, 470, 471]
[436, 472, 473]
[437, 438, 474, 475]
[439, 440, 476, 477]
[441, 478, 479]
[442, 443, 480, 481]
[444, 445, 482, 483]
[484, 485]
[447, 448, 488, 489]
[449, 450, 490, 491]
[451, 452, 492, 493]
[453, 454, 494, 495]
[455, 456, 496, 497]
[457, 458, 498, 499]
[459, 460, 500, 501]
[461, 462, 502, 503]
[463, 464, 504, 505]
[465, 466, 506, 507]
[467, 468, 508, 509]
[469, 470, 510, 511]
[471, 472, 512, 513]
[473, 474, 514, 515]
[475, 476, 516, 517]
[477, 478, 518, 519]
[479, 480, 520, 521]
[481, 482, 522, 523]
[483, 484, 524, 525]
[485, 486, 526, 527]
[487, 488, 528, 529]
[489, 490, 530, 531]
[493, 494, 533, 534]
[495, 496, 535, 536]
[499, 500, 538, 539]
[501, 502, 540, 541]
[505, 506, 543, 544]
[507, 508, 545, 546]
[511, 512, 548, 549]
[513, 514, 550, 551]
[517, 518, 553, 554]
[519, 520, 555, 556]
[523, 524, 558, 559]
[525, 526, 560, 561]
[529, 530, 564, 565]
[531, 532, 566, 567]
[534, 535, 570, 571]
[536, 537, 572, 573]
[539, 540, 576, 577]
[541, 542, 578, 579]
[544, 545, 582, 583]
[546, 547, 584, 585]
[549, 550, 588, 589]
[551, 552, 590, 591]
[554, 555, 594, 595]
[556, 557, 596, 597]
[559, 560, 600, 601]
[561, 562, 602, 603]
[563, 564, 604, 605]
[565, 566, 606, 607]
[567, 568, 608, 609]
[569, 570, 610, 611]
[571, 572, 612, 613]
[573, 574, 614, 615]
[575, 576, 616, 617]
[577, 578, 618, 619]
[579, 580, 620, 621]
[581, 582, 622, 623]
[583, 584, 624, 625]
[585, 586, 626, 627]
[587, 588, 628, 629]
[589, 590, 630, 631]
[591, 592, 632, 633]
[593, 594, 634, 635]
[595, 596, 636, 637]
[597, 598, 638, 639]
[599, 600, 640, 641]
[601, 602, 642, 643]
[605, 606]
[607, 608, 645, 646]
[609, 610, 647, 648]
[611, 612, 649]
[613, 614, 650, 651]
[615, 616, 652, 653]
[617, 618, 654]
[619, 620, 655, 656]
[621, 622, 657, 658]
[623, 624, 659]
[625, 626, 660, 661]
[627, 628, 662, 663]
[629, 630, 664]
[631, 632, 665, 666]
[633, 634, 667, 668]
[635, 636, 669]
[637, 638, 670, 671]
[639, 640, 672, 673]
[641, 642, 674]
[643, 644]
[675, 676]
[645, 677, 678]
[646, 647, 679, 680]
[648, 649, 681, 682]
[650, 683, 684]
[651, 652, 685, 686]
[653, 654, 687, 688]
[655, 689, 690]
[656, 657, 691, 692]
[658, 659, 693, 694]
[660, 695, 696]
[661, 662, 697, 698]
[663, 664, 699, 700]
[665, 701, 702]
[666, 667, 703, 704]
[668, 669, 705, 706]
[670, 707, 708]
[671, 672, 709, 710]
[673, 674, 711, 712]
[713, 714]
[676, 677, 717, 718]
[678, 679, 719, 720]
[680, 681, 721, 722]
[682, 683, 723, 724]
[684, 685, 725, 726]
[686, 687, 727, 728]
[688, 689, 729, 730]
[690, 691, 731, 732]
[692, 693, 733, 734]
[694, 695, 735, 736]
[696, 697, 737, 738]
[698, 699, 739, 740]
[700, 701, 741, 742]
[702, 703, 743, 744]
[704, 705, 745, 746]
[706, 707, 747, 748]
[708, 709, 749, 750]
[710, 711, 751, 752]
[712, 713, 753, 754]
[714, 715, 755, 756]
[716, 717, 757, 758]
[718, 719, 759, 760]
[722, 723, 762, 763]
[724, 725, 764, 765]
[728, 729, 767, 768]
[730, 731, 769, 770]
[734, 735, 772, 773]
[736, 737, 774, 775]
[740, 741, 777, 778]
[742, 743, 779, 780]
[746, 747, 782, 783]
[748, 749, 784, 785]
[752, 753, 787, 788]
[754, 755, 789, 790]
[758, 759, 793, 794]
[760, 761, 795, 796]
[763, 764, 799, 800]
[765, 766, 801, 802]
[768, 769, 805, 806]
[770, 771, 807, 808]
[773, 774, 811, 812]
[775, 776, 813, 814]
[778, 779, 817, 818]
[780, 781, 819, 820]
[783, 784, 823, 824]
[785, 786, 825, 826]
[788, 789, 829, 830]
[790, 791, 831, 832]
[792, 793, 833, 834]
[794, 795, 835, 836]
[796, 797, 837, 838]
[798, 799, 839, 840]
[800, 801, 841, 842]
[802, 803, 843, 844]
[804, 805, 845, 846]
[806, 807, 847, 848]
[808, 809, 849, 850]
[810, 811, 851, 852]
[812, 813, 853, 854]
[814, 815, 855, 856]
[816, 817, 857, 858]
[818, 819, 859, 860]
[820, 821, 861, 862]
[822, 823, 863, 864]
[824, 825, 865, 866]
[826, 827, 867, 868]
[828, 829, 869, 870]
[830, 831, 871, 872]
[834, 835]
[836, 837, 874, 875]
[838, 839, 876, 877]
[840, 841, 878]
[842, 843, 879, 880]
[844, 845, 881, 882]
[846, 847, 883]
[848, 849, 884, 885]
[850, 851, 886, 887]
[852, 853, 888]
[854, 855, 889, 890]
[856, 857, 891, 892]
[858, 859, 893]
[860, 861, 894, 895]
[862, 863, 896, 897]
[864, 865, 898]
[866, 867, 899, 900]
[868, 869, 901, 902]
[870, 871, 903]
[872, 873]
[874, 904]
[875, 876, 905, 906]
[877, 878, 907, 908]
[879, 909]
[880, 881, 910, 911]
[882, 883, 912, 913]
[884, 914]
[885, 886, 915, 916]
[887, 888, 917, 918]
[889, 919]
[890, 891, 920, 921]
[892, 893, 922, 923]
[894, 924]
[895, 896, 925, 926]
[897, 898, 927, 928]
[899, 929]
[900, 901, 930, 931]
[902, 903, 932, 933]
[904, 905, 934, 935]
[906, 907, 936, 937]
[908, 938]
[909, 910, 939, 940]
[911, 912, 941, 942]
[913, 943]
[914, 915, 944, 945]
[916, 917, 946, 947]
[918, 948]
[919, 920, 949, 950]
[921, 922, 951, 952]
[923, 953]
[924, 925, 954, 955]
[926, 927, 956, 957]
[928, 958]
[929, 930, 959, 960]
[931, 932, 961, 962]
[933, 963]
H_Z (456 checks, sparse supports)
[0, 1, 35, 36]
[2, 3, 37, 38]
[4, 39]
[5, 6, 40, 41]
[7, 8, 42, 43]
[9, 44]
[10, 11, 45, 46]
[12, 13, 47, 48]
[14, 49]
[15, 16, 50, 51]
[17, 18, 52, 53]
[19, 54]
[20, 21, 55, 56]
[22, 23, 57, 58]
[24, 59]
[25, 26, 60, 61]
[27, 28, 62, 63]
[29, 64]
[30, 31, 65, 66]
[32, 33, 67, 68]
[34, 69]
[35, 70]
[36, 37, 71, 72]
[38, 39, 73, 74]
[40, 75]
[41, 42, 76, 77]
[43, 44, 78, 79]
[45, 80]
[46, 47, 81, 82]
[48, 49, 83, 84]
[50, 85]
[51, 52, 86, 87]
[53, 54, 88, 89]
[55, 90]
[56, 57, 91, 92]
[58, 59, 93, 94]
[60, 95]
[61, 62, 96, 97]
[63, 64, 98, 99]
[65, 100]
[66, 67, 101, 102]
[68, 69, 103, 104]
[70, 71, 105, 106]
[72, 73, 107, 108]
[74, 109, 110]
[75, 76, 111, 112]
[77, 78, 113, 114]
[79, 115, 116]
[80, 81, 117, 118]
[82, 83, 119, 120]
[84, 121, 122]
[85, 86, 123, 124]
[87, 88, 125, 126]
[89, 127, 128]
[90, 91, 129, 130]
[92, 93, 131, 132]
[94, 133, 134]
[95, 96, 135, 136]
[97, 98, 137, 138]
[99, 139, 140]
[100, 101, 141, 142]
[102, 103, 143, 144]
[104, 145]
[105, 146]
[106, 107, 147, 148]
[108, 109, 149, 150]
[110, 111, 151, 152]
[112, 113, 153, 154]
[114, 115, 155, 156]
[116, 117, 157, 158]
[118, 119, 159, 160]
[120, 121, 161, 162]
[122, 123, 163, 164]
[124, 125, 165, 166]
[126, 127, 167, 168]
[128, 129, 169, 170]
[130, 131, 171, 172]
[132, 133, 173, 174]
[134, 135, 175, 176]
[136, 137, 177, 178]
[138, 139, 179, 180]
[140, 141, 181, 182]
[142, 143, 183, 184]
[144, 145, 185, 186]
[150, 151, 188, 189]
[152, 153, 190, 191]
[156, 157, 193, 194]
[158, 159, 195, 196]
[162, 163, 198, 199]
[164, 165, 200, 201]
[168, 169, 203, 204]
[170, 171, 205, 206]
[174, 175, 208, 209]
[176, 177, 210, 211]
[180, 181, 213, 214]
[182, 183, 215, 216]
[187, 188, 220, 221]
[189, 190, 222, 223]
[192, 193, 226, 227]
[194, 195, 228, 229]
[197, 198, 232, 233]
[199, 200, 234, 235]
[202, 203, 238, 239]
[204, 205, 240, 241]
[207, 208, 244, 245]
[209, 210, 246, 247]
[212, 213, 250, 251]
[214, 215, 252, 253]
[217, 218, 258, 259]
[219, 220, 260, 261]
[221, 222, 262, 263]
[223, 224, 264, 265]
[225, 226, 266, 267]
[227, 228, 268, 269]
[229, 230, 270, 271]
[231, 232, 272, 273]
[233, 234, 274, 275]
[235, 236, 276, 277]
[237, 238, 278, 279]
[239, 240, 280, 281]
[241, 242, 282, 283]
[243, 244, 284, 285]
[245, 246, 286, 287]
[247, 248, 288, 289]
[249, 250, 290, 291]
[251, 252, 292, 293]
[253, 254, 294, 295]
[255, 256, 296, 297]
[257, 298]
[258, 299]
[259, 260, 300, 301]
[261, 262, 302, 303]
[263, 264, 304]
[265, 266, 305, 306]
[267, 268, 307, 308]
[269, 270, 309]
[271, 272, 310, 311]
[273, 274, 312, 313]
[275, 276, 314]
[277, 278, 315, 316]
[279, 280, 317, 318]
[281, 282, 319]
[283, 284, 320, 321]
[285, 286, 322, 323]
[287, 288, 324]
[289, 290, 325, 326]
[291, 292, 327, 328]
[293, 294, 329]
[295, 296, 330, 331]
[297, 298, 332, 333]
[299, 300, 334, 335]
[301, 302, 336, 337]
[303, 338, 339]
[304, 305, 340, 341]
[306, 307, 342, 343]
[308, 344, 345]
[309, 310, 346, 347]
[311, 312, 348, 349]
[313, 350, 351]
[314, 315, 352, 353]
[316, 317, 354, 355]
[318, 356, 357]
[319, 320, 358, 359]
[321, 322, 360, 361]
[323, 362, 363]
[324, 325, 364, 365]
[326, 327, 366, 367]
[328, 368, 369]
[329, 330, 370, 371]
[331, 332, 372, 373]
[333, 374]
[334, 375]
[335, 336, 376, 377]
[337, 338, 378, 379]
[339, 340, 380, 381]
[341, 342, 382, 383]
[343, 344, 384, 385]
[345, 346, 386, 387]
[347, 348, 388, 389]
[349, 350, 390, 391]
[351, 352, 392, 393]
[353, 354, 394, 395]
[355, 356, 396, 397]
[357, 358, 398, 399]
[359, 360, 400, 401]
[361, 362, 402, 403]
[363, 364, 404, 405]
[365, 366, 406, 407]
[367, 368, 408, 409]
[369, 370, 410, 411]
[371, 372, 412, 413]
[373, 374, 414, 415]
[379, 380, 417, 418]
[381, 382, 419, 420]
[385, 386, 422, 423]
[387, 388, 424, 425]
[391, 392, 427, 428]
[393, 394, 429, 430]
[397, 398, 432, 433]
[399, 400, 434, 435]
[403, 404, 437, 438]
[405, 406, 439, 440]
[409, 410, 442, 443]
[411, 412, 444, 445]
[416, 417, 449, 450]
[418, 419, 451, 452]
[421, 422, 455, 456]
[423, 424, 457, 458]
[426, 427, 461, 462]
[428, 429, 463, 464]
[431, 432, 467, 468]
[433, 434, 469, 470]
[436, 437, 473, 474]
[438, 439, 475, 476]
[441, 442, 479, 480]
[443, 444, 481, 482]
[446, 447, 487, 488]
[448, 449, 489, 490]
[450, 451, 491, 492]
[452, 453, 493, 494]
[454, 455, 495, 496]
[456, 457, 497, 498]
[458, 459, 499, 500]
[460, 461, 501, 502]
[462, 463, 503, 504]
[464, 465, 505, 506]
[466, 467, 507, 508]
[468, 469, 509, 510]
[470, 471, 511, 512]
[472, 473, 513, 514]
[474, 475, 515, 516]
[476, 477, 517, 518]
[478, 479, 519, 520]
[480, 481, 521, 522]
[482, 483, 523, 524]
[484, 485, 525, 526]
[486, 527]
[487, 528]
[488, 489, 529, 530]
[490, 491, 531, 532]
[492, 493, 533]
[494, 495, 534, 535]
[496, 497, 536, 537]
[498, 499, 538]
[500, 501, 539, 540]
[502, 503, 541, 542]
[504, 505, 543]
[506, 507, 544, 545]
[508, 509, 546, 547]
[510, 511, 548]
[512, 513, 549, 550]
[514, 515, 551, 552]
[516, 517, 553]
[518, 519, 554, 555]
[520, 521, 556, 557]
[522, 523, 558]
[524, 525, 559, 560]
[526, 527, 561, 562]
[528, 529, 563, 564]
[530, 531, 565, 566]
[532, 567, 568]
[533, 534, 569, 570]
[535, 536, 571, 572]
[537, 573, 574]
[538, 539, 575, 576]
[540, 541, 577, 578]
[542, 579, 580]
[543, 544, 581, 582]
[545, 546, 583, 584]
[547, 585, 586]
[548, 549, 587, 588]
[550, 551, 589, 590]
[552, 591, 592]
[553, 554, 593, 594]
[555, 556, 595, 596]
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