The generator matrix

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

generates a code of length 23 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+66x^12+188x^14+216x^16+272x^18+1066x^20+2348x^22+8192x^23+2222x^24+960x^26+390x^28+276x^30+119x^32+48x^34+14x^36+4x^38+2x^40

The gray image is a code over GF(2) with n=92, k=14 and d=24.
This code was found by Heurico 1.16 in 1.3 seconds.