The generator matrix

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

generates a code of length 93 over Z8 who´s minimum homogenous weight is 68.

Homogenous weight enumerator: w(x)=1x^0+81x^68+18x^70+225x^72+50x^74+6x^75+366x^76+26x^77+166x^78+54x^79+465x^80+130x^81+330x^82+222x^83+708x^84+402x^85+1007x^86+640x^87+2164x^88+898x^89+2932x^90+1100x^91+3726x^92+1196x^93+3872x^94+1162x^95+2981x^96+864x^97+2040x^98+638x^99+987x^100+434x^101+731x^102+220x^103+327x^104+122x^105+526x^106+50x^107+196x^108+22x^109+329x^110+4x^111+41x^112+2x^113+177x^114+16x^116+80x^118+4x^120+23x^122+5x^126+1x^130+1x^138

The gray image is a code over GF(2) with n=372, k=15 and d=136.
This code was found by Heurico 1.16 in 98.9 seconds.