The generator matrix

 1  0  1  1  1  4  1  1  1  2  1  1
 0  1  1  4  3  1  2  7  6  6  2  2
 0  0  2  6  4  6  2  6  4  2  0  6

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

Homogenous weight enumerator: w(x)=1x^0+53x^10+44x^11+88x^12+8x^13+42x^14+12x^15+7x^16+1x^18

The gray image is a code over GF(2) with n=48, k=8 and d=20.
This code was found by Heurico 1.16 in 0.000706 seconds.