The generator matrix

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

generates a code of length 35 over GR(16,4) who´s minimum homogenous weight is 99.

Homogenous weight enumerator: w(x)=1x^0+792x^99+321x^100+948x^103+300x^104+540x^107+216x^108+588x^111+171x^112+204x^115+15x^116

The gray image is a code over GF(4) with n=140, k=6 and d=99.
This code was found by Heurico 1.16 in 3.37 seconds.