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

generates a code of length 90 over Z16 who´s minimum homogenous weight is 84.

Homogenous weight enumerator: w(x)=1x^0+72x^84+210x^85+307x^86+326x^87+428x^88+418x^89+631x^90+522x^91+399x^92+254x^93+201x^94+110x^95+96x^96+58x^97+21x^98+18x^99+18x^100+4x^101+1x^104+1x^156

The gray image is a code over GF(2) with n=720, k=12 and d=336.
This code was found by Heurico 1.16 in 1.14 seconds.