The check matrix of a [53,39,7]3 (dual distance 11).
The first 13 rows and 42 columns are the check matrix of a [42,29,7]3 (dual distance 8).
The first 12 rows and 34 columns are the check matrix of a [34,22,7]3 (dual distance 7).
The first 11 rows and 27 columns are the check matrix of a [27,16,7]3 (dual distance 5).
For more information see Inverting construction Y1.
10000000001101112000220211202222220221101200010011122
01000000001111122112010121101210000021221201001111122
00100000002110101002210120200212210201212101122120111
00010000001020111201200110002110120110200202101121200
00001000002210002221200011201002010210202000221021010
00000100001011212021000010100202010010022102201101222
00000010000102011120120110101110010121120001102020010
00000001000221000222120011100020120001102200121200000
00000000100010112120210001200121020001222200110012221
00000000010101121202100000000011220002202200000100121
00000000000000000000001111100001220000101200010110110
00000000000000000000000000011111110000012200001120102
00000000000000000000000000000000001111111100000001122
00000000000000000000000000000000000000000011111111111
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