The generator matrix

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

generates a code of length 94 over F4[X,sigma]/(X^2) who´s minimum homogenous weight is 260.

Homogenous weight enumerator: w(x)=1x^0+360x^260+720x^261+504x^262+1056x^263+2052x^264+3048x^265+1908x^266+2640x^267+4293x^268+6420x^269+3312x^270+4800x^271+6528x^272+9120x^273+4884x^274+6744x^275+9408x^276+12732x^277+6276x^278+8868x^279+11898x^280+16572x^281+7788x^282+9852x^283+12996x^284+16740x^285+7512x^286+9984x^287+11151x^288+13944x^289+6000x^290+6636x^291+7938x^292+8196x^293+3132x^294+3492x^295+3642x^296+3588x^297+1272x^298+1092x^299+1164x^300+984x^301+384x^302+120x^303+135x^304+96x^305+36x^306+12x^307+60x^308+15x^312+9x^316+12x^320+12x^324+3x^328+3x^336

The gray image is a linear code over GF(4) with n=376, k=9 and d=260.
This code was found by Heurico 1.16 in 435 seconds.