The generator matrix

 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  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  0  1  1  2  2  4  2  2  2  1  0  1  2  4  2  2  2  0  4  2  1  1  1  4  2  1  1  2  1  4  1  2  2  2  4  1  1  1  1  1  1  1
 0  2  0  0  0  0  0  0  2  0  2  6  2  2  6  6  2  6  4  2  6  2  6  4  2  2  4  2  0  4  2  2  0  2  2  4  6  2  6  6  4  6  0  6  0  6  0  0  2  4  0  6  4  4  0  0  2  4  4  6  4  4  2  6  4  4  0  2  0  2  2  0  4  4  2  0  4  6  2  4  0  0  0  2  0  0  2  6  0  2  4  0  0  0  0  0  0  0  0
 0  0  2  0  0  0  0  4  2  2  6  4  4  6  2  0  0  4  0  6  2  2  4  0  0  4  6  2  2  2  6  0  2  6  6  2  4  2  0  6  0  0  4  6  0  4  6  6  2  4  0  0  0  2  2  0  4  0  2  0  6  6  2  0  4  6  2  0  6  6  4  2  4  6  0  0  6  6  0  4  4  4  0  0  6  0  6  2  4  6  6  2  0  0  0  0  0  0  0
 0  0  0  2  0  0  0  6  0  0  6  6  4  6  6  4  2  4  4  6  4  4  6  6  4  2  4  6  4  4  0  4  6  0  2  6  4  6  2  4  2  2  6  0  2  2  0  2  0  2  0  4  2  0  2  4  2  4  6  4  0  6  6  0  4  0  2  2  2  0  4  2  2  6  0  4  2  4  4  0  4  4  4  6  6  0  4  0  4  0  0  0  4  0  0  0  0  0  0
 0  0  0  0  2  0  0  2  4  6  6  0  2  2  4  0  0  4  6  6  0  0  2  4  2  2  0  6  4  6  2  4  4  2  4  0  2  4  6  4  4  4  6  6  0  4  4  0  2  2  2  6  6  4  6  2  2  4  2  2  2  0  0  4  6  4  0  0  4  6  4  0  4  6  0  2  2  4  0  6  0  2  4  6  4  6  4  2  6  0  0  0  0  0  0  0  0  0  0
 0  0  0  0  0  2  0  2  6  2  4  0  4  6  4  6  6  6  0  2  4  6  2  6  6  6  4  0  2  0  0  0  0  2  6  0  0  2  4  0  6  0  2  6  0  2  2  2  4  4  6  6  4  6  2  0  4  4  0  6  4  0  4  4  4  6  2  0  0  6  2  6  6  6  4  4  2  2  6  2  2  2  4  2  6  4  0  0  6  4  4  0  6  0  0  0  0  0  0
 0  0  0  0  0  0  2  2  2  4  0  6  6  4  4  2  6  4  2  6  4  4  0  4  2  2  2  6  0  4  4  2  2  0  2  4  4  4  4  6  2  0  4  6  6  4  2  6  6  6  2  4  0  0  0  0  2  2  0  4  4  0  6  0  6  4  6  2  6  0  0  6  0  2  2  6  2  6  4  4  6  4  2  0  2  6  4  4  2  0  2  6  6  0  0  0  0  0  0

generates a code of length 99 over Z8 who´s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+17x^78+42x^79+77x^80+90x^81+93x^82+124x^83+154x^84+232x^85+267x^86+322x^87+395x^88+428x^89+524x^90+742x^91+927x^92+1072x^93+1222x^94+1606x^95+2035x^96+2244x^97+2488x^98+2610x^99+2531x^100+2326x^101+2008x^102+1568x^103+1258x^104+1088x^105+848x^106+630x^107+519x^108+396x^109+375x^110+330x^111+277x^112+222x^113+153x^114+158x^115+112x^116+66x^117+55x^118+50x^119+25x^120+24x^121+14x^122+8x^123+4x^124+4x^125+2x^127+4x^128+1x^148

The gray image is a code over GF(2) with n=396, k=15 and d=156.
This code was found by Heurico 1.16 in 99.7 seconds.