The check matrix of a [45,39,5]₉ (dual distance 30).

100003411085820310008420051210875102427168552
010001410333408100034200812105751084271285526
001001403126043000312008421051510872712455268
000101031110762003100084210512108757124252685
000010111101111031000842005121087511242726855
000000000000000111111111111111111111111111111

The prime polynomial used to generate GF(9) is: X²+X-1. The element f=aX+b, a,b in {0,1,2}, is written as the number a*3+b.

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