The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  1  1  0  1  1 12  1 12  1 12 12  1  0  1  2  2  1 12  1  1  1  1  1  2  1
 0  2  0  2  8  0  6 14  0  8 14 14  0  2  0  6  6  4  4  2 10 14 12  4 14 12 10  4  8 10 10  8  8  2  8  6  4  4  6  6  6 12  4 10 10 12  6  6  0  0  2 10 12  8 10 14 10 12 12  0 10  6  4  8 12 14  4 12 12  6  0  8 14  2  2  2  4  2  2  6  4 10  2  0 10 12  6 10  0  4  4
 0  0  2  2  0 14  6  8  4 14  2  4 10 14  4 12  0  4  2  6  4  6 10  0  2  6  0  8 10  4  2  8 14 14  8  4 14  8  8 14 12  4 14  0 10  0  2  0  2 12  4  0  2 12  4  2  6 12 12  6 10 14  2 10 14  8 10  2  2  8 14  2 12  8 12  0  2  4  2  8 10  8 12  2  8  6 14  4 10  6  0
 0  0  0  4 12 12  8 12  4  0  8  0  4 12  0  4  0  0  0  8 12 12 12  4 12 12 12 12  8  8  0  8  4  4  4  8  0  0  4  0 12  4  8  8 12  8  0  8 12 12  4  4  4  8  0  4  0 12  8  8  8  4  8 12  4  4  4  8  4 12  0  0  0  8  0  0  8 12  4  0 12  0 12  8  8  8 12  4  0  4 12

generates a code of length 91 over Z16 who´s minimum homogenous weight is 85.

Homogenous weight enumerator: w(x)=1x^0+90x^85+207x^86+246x^87+308x^88+428x^89+563x^90+554x^91+500x^92+454x^93+257x^94+146x^95+149x^96+88x^97+33x^98+30x^99+16x^100+12x^101+12x^102+1x^112+1x^160

The gray image is a code over GF(2) with n=728, k=12 and d=340.
This code was found by Heurico 1.16 in 1.25 seconds.