The generator matrix

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

generates a code of length 37 over Z8 who´s minimum homogenous weight is 29.

Homogenous weight enumerator: w(x)=1x^0+22x^29+88x^30+122x^31+208x^32+242x^33+310x^34+408x^35+430x^36+476x^37+428x^38+388x^39+313x^40+252x^41+174x^42+104x^43+58x^44+30x^45+18x^46+2x^47+13x^48+2x^49+4x^50+2x^54+1x^56

The gray image is a code over GF(2) with n=148, k=12 and d=58.
This code was found by Heurico 1.16 in 10 seconds.