The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  X  1  1  1  1  1  X  1  1  1  1  1  1  1  X  X  1  1  1  1  1  1  1  1  1
 0  6  0  0  0  0  0  0  0  0  6  3  3  6  6  6  0  3  6  3  6  0  6  0  3  6  0  3  6  3  3  3  6  6  6  0  3  3  0  0  0  6  3  6  0  3  6  3  6  3  0  3  6  0  6  0  3  6  6  0  0  3  0  3  3  3  3  6  0  6  3  0  3  6  0  3  0  6
 0  0  6  0  0  0  0  6  3  3  3  0  0  3  6  3  6  0  6  6  0  3  3  0  6  6  3  0  6  0  3  3  3  6  3  0  3  3  6  6  3  3  3  3  0  0  3  3  0  6  6  0  6  6  6  3  3  0  6  6  0  0  6  0  3  0  6  3  6  3  3  0  6  3  3  0  6  6
 0  0  0  6  0  0  6  3  0  3  0  0  3  6  6  3  0  6  0  3  0  3  3  0  3  0  6  3  3  6  6  6  3  0  0  3  3  6  3  0  6  3  3  6  6  3  6  3  3  0  3  6  3  6  3  6  0  3  6  6  6  0  0  3  3  0  6  0  0  6  3  0  0  6  3  6  6  3
 0  0  0  0  6  0  3  3  6  0  3  3  3  0  3  3  0  3  6  0  3  3  0  6  3  0  3  6  0  6  0  6  0  3  0  3  0  3  6  3  0  6  3  6  3  0  3  3  0  6  3  6  0  3  3  0  0  3  0  6  6  6  3  0  3  6  6  6  6  3  0  3  3  3  6  0  3  6
 0  0  0  0  0  6  3  3  3  3  3  3  6  3  6  6  3  6  3  3  3  3  0  3  0  6  0  0  3  6  3  0  3  6  0  6  6  0  6  0  0  6  3  6  6  6  6  0  6  6  6  3  6  3  3  6  6  3  0  0  6  0  3  3  6  3  0  0  3  3  0  3  0  0  0  6  6  3

generates a code of length 78 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 144.

Homogenous weight enumerator: w(x)=1x^0+88x^144+6x^146+114x^147+60x^149+114x^150+240x^152+82x^153+480x^155+4450x^156+480x^158+58x^159+192x^161+42x^162+36x^165+22x^168+18x^171+26x^174+12x^177+12x^180+16x^183+8x^186+2x^195+2x^219

The gray image is a code over GF(3) with n=702, k=8 and d=432.
This code was found by Heurico 1.16 in 46.9 seconds.