The generator matrix

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

generates a code of length 48 over GR(16,4) who´s minimum homogenous weight is 133.

Homogenous weight enumerator: w(x)=1x^0+360x^133+624x^134+312x^135+60x^136+1188x^137+1308x^138+468x^139+66x^140+1608x^141+1452x^142+492x^143+30x^144+1548x^145+1764x^146+516x^147+33x^148+1260x^149+1140x^150+396x^151+39x^152+768x^153+528x^154+120x^155+15x^156+180x^157+96x^158+3x^160+3x^164+3x^168+3x^172

The gray image is a code over GF(4) with n=192, k=7 and d=133.
This code was found by Heurico 1.16 in 0.735 seconds.