length n = 31
dimension k = 6
alphabet length q = 4

minimum distance d = 18

generator matrix:
0000011111111111111111111111111
1111100000111122222222333333331
1223312233022200111333002223331
2132332312303323033022120220111
3231221323330332202303211012021
3322133221222013330110233302201

projective group of automorphisms generated by:
020000
000002
200000
000200
002000
000020

000002
200000
000200
000020
002000
020000