The generator matrix

 1  0  0  0  1  1  1  2  0  0  1  1  1  1  1  1  1  1  1  2  1  0  2
 0  1  0  0  0  1  1  1  1  2  2  2  3  1  1  1  2  3  0  0  2  0  0
 0  0  1  0  1  1  0  3  2  1  0  1  3  1  2  3  1  2  2  1  3  1  1
 0  0  0  1  1  0  1  1  2  0  1  0  3  2  2  3  3  0  0  2  3  1  2
 0  0  0  0  2  0  2  0  2  2  2  2  2  0  2  2  0  0  2  2  0  2  2
 0  0  0  0  0  2  2  2  2  0  0  2  0  0  0  2  2  0  0  2  0  2  0

generates a code of length 23 over Z4 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+118x^18+225x^20+181x^22+177x^24+197x^26+99x^28+15x^30+10x^32+1x^34

The gray image is a code over GF(2) with n=46, k=10 and d=18.
This code was found by Heurico 1.16 in 0.05 seconds.