The generator matrix

 1  0  0  1  1  1  6  4  1  1  6  1  1  1  4  1  4  6  1  2  1  1  1  1  2  1  1  1  6  1  1  0  0  2  1  1  1  2  2  1  4  4  1  1  0  4  2  4  1  1  1
 0  1  0  0  1  1  1  1  2  4  0  5  3  7  1  1  2  1  2  1  5  6  7  6  1  4  6  5  4  0  1  1  1  1  6  4  0  6  4  6  1  1  5  6  1  1  1  1  3  1  1
 0  0  1  3  3  0  3  7  6  5  1  1  7  2  6  2  1  0  3  7  7  0  4  2  2  3  0  4  1  6  2  1  7  0  1  5  3  1  1  7  2  6  3  1  0  3  2  7  5  1  4
 0  0  0  4  0  0  4  0  4  0  4  0  4  4  4  4  4  4  0  0  4  0  0  4  0  0  0  4  4  4  0  4  4  4  4  4  4  0  4  0  0  4  4  4  4  0  0  4  0  4  0
 0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  0  4  4  4  4  0  4  4  4  4  0  4  0  4  0  4  0  0  4  0  0
 0  0  0  0  0  4  4  0  4  4  4  4  0  0  4  4  0  0  0  4  0  4  0  0  4  4  0  4  4  4  0  0  4  0  4  4  0  0  0  0  4  0  4  0  4  0  4  0  4  0  0

generates a code of length 51 over Z8 who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+92x^45+282x^46+338x^47+356x^48+418x^49+470x^50+470x^51+379x^52+336x^53+273x^54+228x^55+167x^56+106x^57+77x^58+46x^59+25x^60+8x^61+17x^62+6x^63+1x^66

The gray image is a code over GF(2) with n=204, k=12 and d=90.
This code was found by Heurico 1.16 in 0.526 seconds.