The generator matrix

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

generates a code of length 36 over GR(16,4) who´s minimum homogenous weight is 102.

Homogenous weight enumerator: w(x)=1x^0+804x^102+393x^104+960x^106+360x^108+576x^110+135x^112+432x^114+120x^116+300x^118+15x^120

The gray image is a code over GF(4) with n=144, k=6 and d=102.
This code was found by Heurico 1.16 in 58.2 seconds.