length n = 39
dimension k = 6
alphabet length q = 4

minimum distance d = 25

generator matrix:
001111111111111111000001111111111111111
110001112222222333011110000111122223333
220330221112333033101120111022300132233
011330230112012023222302013312302210103
113033003130330332131222332311131230221
311221210221122322202021221111103302301

by truncation of 40