The generator matrix

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

generates a code of length 36 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+203x^28+180x^29+896x^30+924x^31+2054x^32+2356x^33+3712x^34+3692x^35+4701x^36+3724x^37+3746x^38+2388x^39+2073x^40+892x^41+796x^42+164x^43+207x^44+16x^45+34x^46+8x^48+1x^60

The gray image is a code over GF(2) with n=144, k=15 and d=56.
This code was found by Heurico 1.16 in 16.5 seconds.