length n = 28
dimension k = 4
alphabet length q = 7

minimum distance d = 21

generator matrix:

0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
1	1	1	2	3	6	0	0	1	1	4	4	0	2	4	5	5	6	1	1	2	5	5	6	5	5	5	6
2	3	6	0	5	3	3	3	1	1	2	2	4	4	6	1	5	2	4	5	3	3	6	4	4	4	4	5
3	5	4	3	5	1	2	5	3	4	3	4	2	3	4	4	6	4	3	2	2	6	5	6	1	2	4	0

projective group of automorphisms generated by:

0	0	1	0
1	0	3	0
0	1	1	0
0	0	0	1