The generator matrix

 1  0  0  0  1  1  1  X  1 aX  1  1  X  1  1  0  1  1  1  1  1  1  1  1  1  1  X  1  1  1  1  0 aX  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0
 0  1  0  0  X  1 X+1  1 (a+1)X  1 (a+1)X+1  0  1 X+1 aX+1  1 aX+a aX+1 a+1 (a+1)X+a+1 aX aX+a X+a (a+1)X (a+1)X+a+1 aX+a+1  1 aX+a+1 (a+1)X+a X+1 X+a  1  1 (a+1)X (a+1)X+a+1  a a+1 (a+1)X+1  a X+1 aX aX+a+1  1 aX+a (a+1)X+a aX+1 (a+1)X+1 X+a  0
 0  0  1  0 (a+1)X+1  1 (a+1)X (a+1)X+1 aX+1  a aX (a+1)X+a aX+1 a+1  a a+1  0 X+a  X (a+1)X (a+1)X+a+1 aX X+a aX+a+1 X+1  1  0 (a+1)X+a (a+1)X aX+1 aX+a (a+1)X+a+1  1  a  X aX+1 aX+a aX+1 (a+1)X+1  0  a aX+a (a+1)X+a+1 aX+a (a+1)X+a+1 X+1 aX  0  1
 0  0  0  1 a+1  X aX+a+1 aX+a+1  a aX (a+1)X+a aX (a+1)X+a (a+1)X  1 (a+1)X+1 X+1 X+a+1 X+a (a+1)X+1 aX+1 (a+1)X+a+1 aX+a+1 aX+a  0 aX+a+1 X+a+1 aX+1 (a+1)X a+1  a X+a+1 (a+1)X (a+1)X+1 aX+a+1  0 aX+a X+a X+a  X a+1  0 (a+1)X+a  1 X+a+1 X+a aX+a aX+1 (a+1)X+a+1

generates a code of length 49 over F4[X,sigma]/(X^2) who´s minimum homogenous weight is 133.

Homogenous weight enumerator: w(x)=1x^0+516x^133+828x^134+780x^135+573x^136+1860x^137+1980x^138+2028x^139+1509x^140+2952x^141+3480x^142+3096x^143+1719x^144+4020x^145+4560x^146+4404x^147+1947x^148+5064x^149+4632x^150+4008x^151+1848x^152+3792x^153+3288x^154+2256x^155+894x^156+1500x^157+1092x^158+324x^159+186x^160+264x^161+108x^162+15x^164+9x^168+3x^172

The gray image is a linear code over GF(4) with n=196, k=8 and d=133.
This code was found by Heurico 1.16 in 19.1 seconds.