The generator matrix

 1  0  1  1  1  0  1  1  0  1  1  0  1  1  2  1  1  0
 0  1  1  0  1  1  0  1  1  0  1  1  0  0  0  0  0  1
 0  0  2  0  0  0  0  0  0  0  0  0  0  0  2  0  2  2
 0  0  0  2  0  0  0  0  0  0  0  0  0  0  2  2  2  0
 0  0  0  0  2  0  0  0  0  0  0  0  0  2  0  2  0  2
 0  0  0  0  0  2  0  0  0  0  0  0  0  2  0  0  2  2
 0  0  0  0  0  0  2  0  0  0  0  0  2  0  0  0  2  2
 0  0  0  0  0  0  0  2  0  0  0  0  2  0  0  2  0  2
 0  0  0  0  0  0  0  0  2  0  0  0  0  2  0  2  2  0
 0  0  0  0  0  0  0  0  0  2  0  0  2  2  2  2  2  2
 0  0  0  0  0  0  0  0  0  0  2  0  2  2  2  0  0  2
 0  0  0  0  0  0  0  0  0  0  0  2  2  2  2  2  0  0

generates a code of length 18 over Z4 who´s minimum homogenous weight is 8.

Homogenous weight enumerator: w(x)=1x^0+78x^8+8x^9+144x^10+72x^11+292x^12+416x^13+912x^14+1312x^15+1668x^16+2288x^17+2016x^18+2288x^19+1656x^20+1312x^21+864x^22+416x^23+362x^24+72x^25+144x^26+8x^27+36x^28+16x^30+3x^32

The gray image is a code over GF(2) with n=36, k=14 and d=8.
This code was found by Heurico 1.16 in 1.39 seconds.