The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1
 0  1  1  a 3a^2+2 2a^2+3a+1 a^2+3a a^2+3a+3 3a^2+2a+3  a 3a^2+2  0 2a^2+3
 0  0 2a^2+2  0  2  2 2a+2  2 2a^2 2a+2 2a^2+2 2a^2 2a^2
 0  0  0  2 2a^2+2 2a^2+2a+2 2a+2 2a^2 2a^2+2a+2 2a^2+2 2a^2+2 2a^2+2a 2a

generates a code of length 13 over GR(64,4) who´s minimum homogenous weight is 72.

Homogenous weight enumerator: w(x)=1x^0+322x^72+1792x^77+714x^80+17920x^84+25088x^85+840x^88+125440x^92+87808x^93+1533x^96+686x^104

The gray image is a code over GF(8) with n=104, k=6 and d=72.
This code was found by Heurico 1.16 in 1.8 seconds.