length n = 50
dimension k = 7
alphabet length q = 3

minimum distance d = 28

generator matrix:
00000001111111111111111100000011111111111111111111
01111110000001112222222200011100011111111122222222
10001110012221120111122201102200100111222200111222
00110120122221222011211211111201102111011212022012
20010110011121011012201210212122011002201112101122
02222012000201122120221010202222111010102022021210
00002020020120122100111200111222212102020221200001

by truncation of 51