length n = 56
dimension k = 6
alphabet length q = 4

minimum distance d = 37

generator matrix:
11111111111111000001111111111111111011111111111111111111
00000111222333001110001111111222333100000111112222233333
22333002023000010131230133333012023011223002230123301222
33233012310123103031122300223031222202130231203301212013
13312201302103302133100311111013130320200021220001011013
33033210013213121103002101133322201230000333021010031011

by truncation of 57