The generator matrix

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

generates a code of length 22 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+66x^12+174x^16+128x^18+262x^20+2816x^22+288x^24+128x^26+174x^28+49x^32+10x^36

The gray image is a code over GF(2) with n=88, k=12 and d=24.
This code was found by Heurico 1.16 in 0.114 seconds.