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