The generator matrix

 1  1  1  1  1  1  1  1  2  2  2  2  2  2  2  1  1  1
 0 12  0  4  0  0  4 12  0  4 12  8  4 12  0  0  0  0
 0  0 12  4  0 12  4  0 12  4  0  4  4  0  0  0  0  0
 0  0  0  8  0  0  0  0  0  0  0  8  0  8  8  0  0  0
 0  0  0  0  8  0  0  0  0  0  0  8  8  8  0  0  0  0
 0  0  0  0  0  8  0  0  0  0  8  0  8  8  0  0  0  0
 0  0  0  0  0  0  8  0  0  0  8  0  0  8  8  0  0  0
 0  0  0  0  0  0  0  8  0  0  8  8  8  0  0  0  0  0
 0  0  0  0  0  0  0  0  8  0  8  0  8  0  8  0  0  0
 0  0  0  0  0  0  0  0  0  8  0  8  8  0  8  0  0  0

generates a code of length 18 over Z16 who´s minimum homogenous weight is 8.

Homogenous weight enumerator: w(x)=1x^0+101x^8+144x^10+32x^11+528x^12+224x^13+892x^14+672x^15+2123x^16+1120x^17+21136x^18+1120x^19+1976x^20+672x^21+1096x^22+224x^23+367x^24+32x^25+256x^26+24x^28+28x^30

The gray image is a code over GF(2) with n=144, k=15 and d=32.
This code was found by Heurico 1.16 in 0.799 seconds.