Parity checks
X-checks 344 (max weight 4) · Z-checks 344 (max weight 4)
H_X (344 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]
[1, 2, 41, 42]
[3, 4, 43, 44]
[6, 7, 46, 47]
[8, 9, 48, 49]
[11, 12, 51, 52]
[13, 14, 53, 54]
[16, 17, 56, 57]
[18, 19, 58, 59]
[21, 22, 61, 62]
[23, 24, 63, 64]
[26, 27, 66, 67]
[28, 29, 68, 69]
[31, 32, 71, 72]
[33, 34, 73, 74]
[36, 37, 76, 77]
[38, 39, 78, 79]
[40, 41, 80, 81]
[42, 43, 82, 83]
[45, 46, 85, 86]
[47, 48, 87, 88]
[50, 51, 90, 91]
[52, 53, 92, 93]
[55, 56, 95, 96]
[57, 58, 97, 98]
[60, 61, 100, 101]
[62, 63, 102, 103]
[65, 66, 105, 106]
[67, 68, 107, 108]
[70, 71, 110, 111]
[72, 73, 112, 113]
[75, 76, 115, 116]
[77, 78, 117, 118]
[81, 82, 121, 122]
[83, 84, 123, 124]
[86, 87, 127, 128]
[88, 89, 129, 130]
[91, 92, 133, 134]
[93, 94, 135, 136]
[96, 97, 139, 140]
[98, 99, 141, 142]
[101, 102, 145, 146]
[103, 104, 147, 148]
[106, 107, 151, 152]
[108, 109, 153, 154]
[111, 112, 157, 158]
[113, 114, 159, 160]
[116, 117, 163, 164]
[118, 119, 165, 166]
[120, 121, 167, 168]
[122, 123, 169, 170]
[124, 125, 171, 172]
[126, 127, 173, 174]
[128, 129, 175, 176]
[130, 131, 177, 178]
[132, 133, 179, 180]
[134, 135, 181, 182]
[136, 137, 183, 184]
[138, 139, 185, 186]
[140, 141, 187, 188]
[142, 143, 189, 190]
[144, 145, 191, 192]
[146, 147, 193, 194]
[148, 149, 195, 196]
[150, 151, 197, 198]
[152, 153, 199, 200]
[154, 155, 201, 202]
[156, 157, 203, 204]
[158, 159, 205, 206]
[160, 161, 207, 208]
[162, 163, 209, 210]
[164, 165, 211, 212]
[168, 169]
[170, 171, 214, 215]
[172, 173, 216, 217]
[174, 175, 218]
[176, 177, 219, 220]
[178, 179, 221, 222]
[180, 181, 223]
[182, 183, 224, 225]
[184, 185, 226, 227]
[186, 187, 228]
[188, 189, 229, 230]
[190, 191, 231, 232]
[192, 193, 233]
[194, 195, 234, 235]
[196, 197, 236, 237]
[198, 199, 238]
[200, 201, 239, 240]
[202, 203, 241, 242]
[204, 205, 243]
[206, 207, 244, 245]
[208, 209, 246, 247]
[210, 211, 248]
[212, 213]
[249, 250]
[214, 251, 252]
[215, 216, 253, 254]
[217, 218, 255, 256]
[219, 257, 258]
[220, 221, 259, 260]
[222, 223, 261, 262]
[224, 263, 264]
[225, 226, 265, 266]
[227, 228, 267, 268]
[229, 269, 270]
[230, 231, 271, 272]
[232, 233, 273, 274]
[234, 275, 276]
[235, 236, 277, 278]
[237, 238, 279, 280]
[239, 281, 282]
[240, 241, 283, 284]
[242, 243, 285, 286]
[244, 287, 288]
[245, 246, 289, 290]
[247, 248, 291, 292]
[293, 294]
[250, 251, 297, 298]
[252, 253, 299, 300]
[254, 255, 301, 302]
[256, 257, 303, 304]
[258, 259, 305, 306]
[260, 261, 307, 308]
[262, 263, 309, 310]
[264, 265, 311, 312]
[266, 267, 313, 314]
[268, 269, 315, 316]
[270, 271, 317, 318]
[272, 273, 319, 320]
[274, 275, 321, 322]
[276, 277, 323, 324]
[278, 279, 325, 326]
[280, 281, 327, 328]
[282, 283, 329, 330]
[284, 285, 331, 332]
[286, 287, 333, 334]
[288, 289, 335, 336]
[290, 291, 337, 338]
[292, 293, 339, 340]
[294, 295, 341, 342]
[296, 297, 343, 344]
[298, 299, 345, 346]
[302, 303, 348, 349]
[304, 305, 350, 351]
[308, 309, 353, 354]
[310, 311, 355, 356]
[314, 315, 358, 359]
[316, 317, 360, 361]
[320, 321, 363, 364]
[322, 323, 365, 366]
[326, 327, 368, 369]
[328, 329, 370, 371]
[332, 333, 373, 374]
[334, 335, 375, 376]
[338, 339, 378, 379]
[340, 341, 380, 381]
[344, 345, 384, 385]
[346, 347, 386, 387]
[349, 350, 390, 391]
[351, 352, 392, 393]
[354, 355, 396, 397]
[356, 357, 398, 399]
[359, 360, 402, 403]
[361, 362, 404, 405]
[364, 365, 408, 409]
[366, 367, 410, 411]
[369, 370, 414, 415]
[371, 372, 416, 417]
[374, 375, 420, 421]
[376, 377, 422, 423]
[379, 380, 426, 427]
[381, 382, 428, 429]
[383, 384, 430, 431]
[385, 386, 432, 433]
[387, 388, 434, 435]
[389, 390, 436, 437]
[391, 392, 438, 439]
[393, 394, 440, 441]
[395, 396, 442, 443]
[397, 398, 444, 445]
[399, 400, 446, 447]
[401, 402, 448, 449]
[403, 404, 450, 451]
[405, 406, 452, 453]
[407, 408, 454, 455]
[409, 410, 456, 457]
[411, 412, 458, 459]
[413, 414, 460, 461]
[415, 416, 462, 463]
[417, 418, 464, 465]
[419, 420, 466, 467]
[421, 422, 468, 469]
[423, 424, 470, 471]
[425, 426, 472, 473]
[427, 428, 474, 475]
[431, 432]
[433, 434, 477, 478]
[435, 436, 479, 480]
[437, 438, 481]
[439, 440, 482, 483]
[441, 442, 484, 485]
[443, 444, 486]
[445, 446, 487, 488]
[447, 448, 489, 490]
[449, 450, 491]
[451, 452, 492, 493]
[453, 454, 494, 495]
[455, 456, 496]
[457, 458, 497, 498]
[459, 460, 499, 500]
[461, 462, 501]
[463, 464, 502, 503]
[465, 466, 504, 505]
[467, 468, 506]
[469, 470, 507, 508]
[471, 472, 509, 510]
[473, 474, 511]
[475, 476]
[512, 513]
[477, 514, 515]
[478, 479, 516, 517]
[480, 481, 518, 519]
[482, 520, 521]
[483, 484, 522, 523]
[485, 486, 524, 525]
[487, 526, 527]
[488, 489, 528, 529]
[490, 491, 530, 531]
[492, 532, 533]
[493, 494, 534, 535]
[495, 496, 536, 537]
[497, 538, 539]
[498, 499, 540, 541]
[500, 501, 542, 543]
[502, 544, 545]
[503, 504, 546, 547]
[505, 506, 548, 549]
[507, 550, 551]
[508, 509, 552, 553]
[510, 511, 554, 555]
[556, 557]
[513, 514, 560, 561]
[515, 516, 562, 563]
[517, 518, 564, 565]
[519, 520, 566, 567]
[521, 522, 568, 569]
[523, 524, 570, 571]
[525, 526, 572, 573]
[527, 528, 574, 575]
[529, 530, 576, 577]
[531, 532, 578, 579]
[533, 534, 580, 581]
[535, 536, 582, 583]
[537, 538, 584, 585]
[539, 540, 586, 587]
[541, 542, 588, 589]
[543, 544, 590, 591]
[545, 546, 592, 593]
[547, 548, 594, 595]
[549, 550, 596, 597]
[551, 552, 598, 599]
[553, 554, 600, 601]
[555, 556, 602, 603]
[557, 558, 604, 605]
[559, 560, 606, 607]
[561, 562, 608, 609]
[565, 566, 611, 612]
[567, 568, 613, 614]
[571, 572, 616, 617]
[573, 574, 618, 619]
[577, 578, 621, 622]
[579, 580, 623, 624]
[583, 584, 626, 627]
[585, 586, 628, 629]
[589, 590, 631, 632]
[591, 592, 633, 634]
[595, 596, 636, 637]
[597, 598, 638, 639]
[601, 602, 641, 642]
[603, 604, 643, 644]
[607, 608, 647, 648]
[609, 610, 649, 650]
[612, 613, 652, 653]
[614, 615, 654, 655]
[617, 618, 657, 658]
[619, 620, 659, 660]
[622, 623, 662, 663]
[624, 625, 664, 665]
[627, 628, 667, 668]
[629, 630, 669, 670]
[632, 633, 672, 673]
[634, 635, 674, 675]
[637, 638, 677, 678]
[639, 640, 679, 680]
[642, 643, 682, 683]
[644, 645, 684, 685]
[646, 647, 686, 687]
[648, 649, 688, 689]
[651, 652, 691, 692]
[653, 654, 693, 694]
[656, 657, 696, 697]
[658, 659, 698, 699]
[661, 662, 701, 702]
[663, 664, 703, 704]
[666, 667, 706, 707]
[668, 669, 708, 709]
[671, 672, 711, 712]
[673, 674, 713, 714]
[676, 677, 716, 717]
[678, 679, 718, 719]
[681, 682, 721, 722]
[683, 684, 723, 724]
[687, 688]
[689, 690]
[692, 693]
[694, 695]
[697, 698]
[699, 700]
[702, 703]
[704, 705]
[707, 708]
[709, 710]
[712, 713]
[714, 715]
[717, 718]
[719, 720]
[722, 723]
[724, 725]
H_Z (344 checks, sparse supports)
[0, 1, 40, 41]
[2, 3, 42, 43]
[4, 44]
[5, 6, 45, 46]
[7, 8, 47, 48]
[9, 49]
[10, 11, 50, 51]
[12, 13, 52, 53]
[14, 54]
[15, 16, 55, 56]
[17, 18, 57, 58]
[19, 59]
[20, 21, 60, 61]
[22, 23, 62, 63]
[24, 64]
[25, 26, 65, 66]
[27, 28, 67, 68]
[29, 69]
[30, 31, 70, 71]
[32, 33, 72, 73]
[34, 74]
[35, 36, 75, 76]
[37, 38, 77, 78]
[39, 79]
[40, 80]
[41, 42, 81, 82]
[43, 44, 83, 84]
[45, 85]
[46, 47, 86, 87]
[48, 49, 88, 89]
[50, 90]
[51, 52, 91, 92]
[53, 54, 93, 94]
[55, 95]
[56, 57, 96, 97]
[58, 59, 98, 99]
[60, 100]
[61, 62, 101, 102]
[63, 64, 103, 104]
[65, 105]
[66, 67, 106, 107]
[68, 69, 108, 109]
[70, 110]
[71, 72, 111, 112]
[73, 74, 113, 114]
[75, 115]
[76, 77, 116, 117]
[78, 79, 118, 119]
[80, 81, 120, 121]
[82, 83, 122, 123]
[84, 124, 125]
[85, 86, 126, 127]
[87, 88, 128, 129]
[89, 130, 131]
[90, 91, 132, 133]
[92, 93, 134, 135]
[94, 136, 137]
[95, 96, 138, 139]
[97, 98, 140, 141]
[99, 142, 143]
[100, 101, 144, 145]
[102, 103, 146, 147]
[104, 148, 149]
[105, 106, 150, 151]
[107, 108, 152, 153]
[109, 154, 155]
[110, 111, 156, 157]
[112, 113, 158, 159]
[114, 160, 161]
[115, 116, 162, 163]
[117, 118, 164, 165]
[119, 166]
[120, 167]
[121, 122, 168, 169]
[123, 124, 170, 171]
[125, 126, 172, 173]
[127, 128, 174, 175]
[129, 130, 176, 177]
[131, 132, 178, 179]
[133, 134, 180, 181]
[135, 136, 182, 183]
[137, 138, 184, 185]
[139, 140, 186, 187]
[141, 142, 188, 189]
[143, 144, 190, 191]
[145, 146, 192, 193]
[147, 148, 194, 195]
[149, 150, 196, 197]
[151, 152, 198, 199]
[153, 154, 200, 201]
[155, 156, 202, 203]
[157, 158, 204, 205]
[159, 160, 206, 207]
[161, 162, 208, 209]
[163, 164, 210, 211]
[165, 166, 212, 213]
[171, 172, 215, 216]
[173, 174, 217, 218]
[177, 178, 220, 221]
[179, 180, 222, 223]
[183, 184, 225, 226]
[185, 186, 227, 228]
[189, 190, 230, 231]
[191, 192, 232, 233]
[195, 196, 235, 236]
[197, 198, 237, 238]
[201, 202, 240, 241]
[203, 204, 242, 243]
[207, 208, 245, 246]
[209, 210, 247, 248]
[214, 215, 252, 253]
[216, 217, 254, 255]
[219, 220, 258, 259]
[221, 222, 260, 261]
[224, 225, 264, 265]
[226, 227, 266, 267]
[229, 230, 270, 271]
[231, 232, 272, 273]
[234, 235, 276, 277]
[236, 237, 278, 279]
[239, 240, 282, 283]
[241, 242, 284, 285]
[244, 245, 288, 289]
[246, 247, 290, 291]
[249, 250, 296, 297]
[251, 252, 298, 299]
[253, 254, 300, 301]
[255, 256, 302, 303]
[257, 258, 304, 305]
[259, 260, 306, 307]
[261, 262, 308, 309]
[263, 264, 310, 311]
[265, 266, 312, 313]
[267, 268, 314, 315]
[269, 270, 316, 317]
[271, 272, 318, 319]
[273, 274, 320, 321]
[275, 276, 322, 323]
[277, 278, 324, 325]
[279, 280, 326, 327]
[281, 282, 328, 329]
[283, 284, 330, 331]
[285, 286, 332, 333]
[287, 288, 334, 335]
[289, 290, 336, 337]
[291, 292, 338, 339]
[293, 294, 340, 341]
[295, 342]
[296, 343]
[297, 298, 344, 345]
[299, 300, 346, 347]
[301, 302, 348]
[303, 304, 349, 350]
[305, 306, 351, 352]
[307, 308, 353]
[309, 310, 354, 355]
[311, 312, 356, 357]
[313, 314, 358]
[315, 316, 359, 360]
[317, 318, 361, 362]
[319, 320, 363]
[321, 322, 364, 365]
[323, 324, 366, 367]
[325, 326, 368]
[327, 328, 369, 370]
[329, 330, 371, 372]
[331, 332, 373]
[333, 334, 374, 375]
[335, 336, 376, 377]
[337, 338, 378]
[339, 340, 379, 380]
[341, 342, 381, 382]
[343, 344, 383, 384]
[345, 346, 385, 386]
[347, 387, 388]
[348, 349, 389, 390]
[350, 351, 391, 392]
[352, 393, 394]
[353, 354, 395, 396]
[355, 356, 397, 398]
[357, 399, 400]
[358, 359, 401, 402]
[360, 361, 403, 404]
[362, 405, 406]
[363, 364, 407, 408]
[365, 366, 409, 410]
[367, 411, 412]
[368, 369, 413, 414]
[370, 371, 415, 416]
[372, 417, 418]
[373, 374, 419, 420]
[375, 376, 421, 422]
[377, 423, 424]
[378, 379, 425, 426]
[380, 381, 427, 428]
[382, 429]
[383, 430]
[384, 385, 431, 432]
[386, 387, 433, 434]
[388, 389, 435, 436]
[390, 391, 437, 438]
[392, 393, 439, 440]
[394, 395, 441, 442]
[396, 397, 443, 444]
[398, 399, 445, 446]
[400, 401, 447, 448]
[402, 403, 449, 450]
[404, 405, 451, 452]
[406, 407, 453, 454]
[408, 409, 455, 456]
[410, 411, 457, 458]
[412, 413, 459, 460]
[414, 415, 461, 462]
[416, 417, 463, 464]
[418, 419, 465, 466]
[420, 421, 467, 468]
[422, 423, 469, 470]
[424, 425, 471, 472]
[426, 427, 473, 474]
[428, 429, 475, 476]
[434, 435, 478, 479]
[436, 437, 480, 481]
[440, 441, 483, 484]
[442, 443, 485, 486]
[446, 447, 488, 489]
[448, 449, 490, 491]
[452, 453, 493, 494]
[454, 455, 495, 496]
[458, 459, 498, 499]
[460, 461, 500, 501]
[464, 465, 503, 504]
[466, 467, 505, 506]
[470, 471, 508, 509]
[472, 473, 510, 511]
[477, 478, 515, 516]
[479, 480, 517, 518]
[482, 483, 521, 522]
[484, 485, 523, 524]
[487, 488, 527, 528]
[489, 490, 529, 530]
[492, 493, 533, 534]
[494, 495, 535, 536]
[497, 498, 539, 540]
[499, 500, 541, 542]
[502, 503, 545, 546]
[504, 505, 547, 548]
[507, 508, 551, 552]
[509, 510, 553, 554]
[512, 513, 559, 560]
[514, 515, 561, 562]
[516, 517, 563, 564]
[518, 519, 565, 566]
[520, 521, 567, 568]
[522, 523, 569, 570]
[524, 525, 571, 572]
[526, 527, 573, 574]
[528, 529, 575, 576]
[530, 531, 577, 578]
[532, 533, 579, 580]
[534, 535, 581, 582]
[536, 537, 583, 584]
[538, 539, 585, 586]
[540, 541, 587, 588]
[542, 543, 589, 590]
[544, 545, 591, 592]
[546, 547, 593, 594]
[548, 549, 595, 596]
[550, 551, 597, 598]
[552, 553, 599, 600]
[554, 555, 601, 602]
[556, 557, 603, 604]
[558, 605]
[559, 606]
[560, 561, 607, 608]
[562, 563, 609, 610]
[564, 565, 611]
[566, 567, 612, 613]
[568, 569, 614, 615]
[570, 571, 616]
[572, 573, 617, 618]
[574, 575, 619, 620]
[576, 577, 621]
[578, 579, 622, 623]
[580, 581, 624, 625]
[582, 583, 626]
[584, 585, 627, 628]
[586, 587, 629, 630]
[588, 589, 631]
[590, 591, 632, 633]
[592, 593, 634, 635]
[594, 595, 636]
[596, 597, 637, 638]
[598, 599, 639, 640]
[600, 601, 641]
[602, 603, 642, 643]
[604, 605, 644, 645]
[606, 607, 646, 647]
[608, 609, 648, 649]
[610, 650]
[611, 612, 651, 652]
[613, 614, 653, 654]
[615, 655]
[616, 617, 656, 657]
[618, 619, 658, 659]
[620, 660]
[621, 622, 661, 662]
[623, 624, 663, 664]
[625, 665]
[626, 627, 666, 667]
[628, 629, 668, 669]
[630, 670]
[631, 632, 671, 672]
[633, 634, 673, 674]
[635, 675]
[636, 637, 676, 677]
[638, 639, 678, 679]
[640, 680]
[641, 642, 681, 682]
[643, 644, 683, 684]
[645, 685]
[646, 686]
[647, 648, 687, 688]
[649, 650, 689, 690]
[651, 691]
[652, 653, 692, 693]
[654, 655, 694, 695]
[656, 696]
[657, 658, 697, 698]
[659, 660, 699, 700]
[661, 701]
[662, 663, 702, 703]
[664, 665, 704, 705]
[666, 706]
[667, 668, 707, 708]
[669, 670, 709, 710]
[671, 711]
[672, 673, 712, 713]
[674, 675, 714, 715]
[676, 716]
[677, 678, 717, 718]
[679, 680, 719, 720]
[681, 721]
[682, 683, 722, 723]
[684, 685, 724, 725]