The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1
 0  4  0  0  0  0  0  0  0  0  0  0
 0  0  4  0  0  0  0  0  0  0  0  0
 0  0  0  4  0  0  0  0  0  0  0  0
 0  0  0  0  4  0  0  0  0  0  0  0
 0  0  0  0  0  4  0  0  0  0  0  0
 0  0  0  0  0  0  4  0  0  0  0  0
 0  0  0  0  0  0  0  4  0  0  0  0
 0  0  0  0  0  0  0  0  4  0  0  0
 0  0  0  0  0  0  0  0  0  4  0  0
 0  0  0  0  0  0  0  0  0  0  4  0
 0  0  0  0  0  0  0  0  0  0  0  4

generates a code of length 12 over Z8 who´s minimum homogenous weight is 2.

Homogenous weight enumerator: w(x)=1x^0+12x^2+66x^4+220x^6+495x^8+792x^10+13212x^12+792x^14+495x^16+220x^18+66x^20+12x^22+1x^24

The gray image is a code over GF(2) with n=48, k=14 and d=4.
This code was found by Heurico 1.16 in 0.14 seconds.