The check matrix of a [26,16,7]₄.

For more information see Inverting construction Y₁.

10000000010101230320101313
01000000001012303210212121
00100000010123032100213011
00010000001230321010122313
00001000012303210100123322
00000100023032101010010333
00000010030321010120001331
00000001003210101230001132
00000000132101012300000012
00000000000000000001111111

The prime polynomial used to generate GF(4) is: X²+X+1. The element f=aX+b, a,b in {0,1}, is written as the number a*2+b.

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