The generator matrix

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

generates a code of length 16 over Z4 who´s minimum homogenous weight is 8.

Homogenous weight enumerator: w(x)=1x^0+148x^8+64x^10+928x^12+1472x^14+2966x^16+1472x^18+928x^20+64x^22+148x^24+1x^32

The gray image is a code over GF(2) with n=32, k=13 and d=8.
This code was found by Heurico 1.16 in 5.36 seconds.