The generator matrix

 1  0  1  1  1  4  1  1  1  1  0  6  1  1
 0  1  1  4  3  1  2  7  6  5  0  1  4  7
 0  0  2  6  4  6  2  6  4  0  2  0  2  2

generates a code of length 14 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+53x^12+60x^13+60x^14+24x^15+33x^16+12x^17+12x^18+1x^20

The gray image is a code over GF(2) with n=56, k=8 and d=24.
This code was found by Heurico 1.16 in 0.00096 seconds.