The generator matrix

 1  1  1  1  1  1  1  1  2  0  2  1
 0  2  0  6  4  6  4  2  6  2  0  0
 0  0  4  4  4  0  0  4  0  4  0  0

generates a code of length 12 over Z8 who´s minimum homogenous weight is 10.

Homogenous weight enumerator: w(x)=1x^0+6x^10+18x^11+7x^12+28x^13+1x^14+2x^15+1x^18

The gray image is a code over GF(2) with n=48, k=6 and d=20.
This code was found by Heurico 1.16 in 0.000408 seconds.