The generator matrix

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

generates a code of length 54 over Z8 who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+15x^52+94x^54+15x^56+2x^70+1x^76

The gray image is a code over GF(2) with n=216, k=7 and d=104.
This code was found by Heurico 1.16 in 0.0379 seconds.