length n = 21
dimension k = 9
alphabet length q = 2

minimum distance d = 8

generator matrix:
000000010001000111111
000000100010011001111
000001000001111010011
000010000100101100111
000100001000101011101
001000001000110101011
010000000100011111001
111111111111000000000
100000000010110110101

projective group of automorphisms generated by:
000000100
100000000
000100000
000000001
000010000
000001000
010000000
000000010
001000000

000000001
000001000
010000000
001000000
000100000
000000100
100000000
000000010
000010000