The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+189x^28+208x^29+768x^30+1140x^31+1727x^32+2500x^33+3322x^34+4276x^35+4247x^36+4452x^37+3570x^38+2556x^39+1706x^40+1004x^41+622x^42+220x^43+177x^44+28x^45+38x^46+14x^48+3x^52

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 16.1 seconds.