The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1
 0  1 36 31 16 48  4 19  7 29 38  9  6

generates a code of length 13 over Z49 who´s minimum homogenous weight is 72.

Homogenous weight enumerator: w(x)=1x^0+126x^72+420x^73+30x^77+756x^79+1050x^80+18x^84

The gray image is a code over GF(7) with n=91, k=4 and d=72.
This code was found by Heurico 1.16 in 0.000624 seconds.