The generator matrix

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

generates a code of length 49 over GR(16,4) who´s minimum homogenous weight is 133.

Homogenous weight enumerator: w(x)=1x^0+396x^133+948x^134+624x^135+921x^136+1632x^137+2352x^138+1224x^139+1965x^140+3348x^141+3492x^142+1992x^143+2703x^144+4272x^145+4872x^146+2640x^147+3216x^148+4548x^149+4884x^150+2544x^151+3063x^152+4224x^153+3432x^154+1416x^155+1311x^156+1404x^157+1428x^158+312x^159+120x^160+144x^161+96x^162+6x^164+6x^172

The gray image is a code over GF(4) with n=196, k=8 and d=133.
This code was found by Heurico 1.16 in 12.3 seconds.