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

generates a code of length 54 over Z8 who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+115x^46+324x^48+48x^49+355x^50+176x^51+551x^52+288x^53+496x^54+288x^55+521x^56+176x^57+283x^58+48x^59+209x^60+128x^62+53x^64+30x^66+4x^68+1x^70+1x^80

The gray image is a code over GF(2) with n=216, k=12 and d=92.
This code was found by Heurico 1.16 in 0.827 seconds.