The generator matrix

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

generates a code of length 46 over Z8 who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+14x^45+39x^46+7x^48+2x^53+1x^78

The gray image is a code over GF(2) with n=184, k=6 and d=90.
This code was found by Heurico 1.16 in 0.0231 seconds.