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