The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  0  2  2  2  2  2  1  0  1  1  2  1  2  4  2  1  1  2  1
 0  2  0  2  0  0  2  6  0  4  6  2  0  2  2  4  0  0  4  6  2  2  2  4  4  4  0  6  6  6  2  0  6  6  4  0
 0  0  2  2  0  6  2  0  4  2  0  2  0  6  4  2  6  2  2  0  2  2  0  2  2  4  4  4  4  0  2  6  6  0  0  0
 0  0  0  4  0  0  0  0  4  4  4  4  4  0  4  0  0  0  0  0  4  4  0  0  4  4  0  4  0  0  4  4  0  0  0  4
 0  0  0  0  4  0  0  0  0  0  0  4  4  4  0  0  4  0  0  4  4  4  4  4  0  0  0  4  0  0  4  4  4  0  0  4
 0  0  0  0  0  4  0  0  0  4  0  0  4  4  4  4  0  0  4  0  0  4  4  0  0  4  0  4  0  4  4  4  4  4  0  0
 0  0  0  0  0  0  4  0  4  4  4  4  4  0  4  4  4  0  0  4  0  0  4  0  4  0  4  4  4  4  4  0  4  0  0  0
 0  0  0  0  0  0  0  4  0  0  0  4  0  4  4  0  0  4  4  0  4  4  0  4  0  4  0  0  4  4  0  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+45x^28+64x^29+146x^30+118x^31+250x^32+316x^33+371x^34+532x^35+447x^36+532x^37+378x^38+312x^39+224x^40+100x^41+108x^42+60x^43+49x^44+12x^45+20x^46+2x^47+5x^48+1x^50+3x^52

The gray image is a code over GF(2) with n=144, k=12 and d=56.
This code was found by Heurico 1.16 in 0.454 seconds.