length n = 81
dimension k = 7
alphabet length q = 4

minimum distance d = 51

generator matrix:
000000000111111111111111111111111111111111111111111111111111111111111111111111111
111111111000000000111222333111111111222222222333333333111111111222222222333333333
111222333111222333123123123000000000000000000000000000111222333111222333111222333
123123123123123123000000000111222333111222333111222333123123123123123123123123123
312231123000000000000000000123123123123123123123123123123312231231123312312231123
000000000000000000321132213231123312231123312231123312111333222222111333333222111
000000000312231123000000000312312312231231231123123123123312231123312231123312231

projective group of automorphisms generated by:
0100000
0001000
0010000
1000000
0000001
0000100
0000010

1000000
0100000
0030000
0003000
0000100
0000020
0000001