The generator matrix

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

generates a code of length 9 over Z8 who´s minimum homogenous weight is 8.

Homogenous weight enumerator: w(x)=1x^0+78x^8+32x^10+16x^12+1x^16

The gray image is a code over GF(2) with n=36, k=7 and d=16.
This code was found by Heurico 1.16 in 0.00044 seconds.