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  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0  0  1  X  X  X  1  1  X  1  1  1  1  1  1  X  X  1  1  1  1  1
 0  X  0  0 2X X+3  X 2X+3 2X  6  3 X+3 X+3 2X+3 2X  3 X+6 2X+3  X X+3  X 2X  6 2X+6  0 X+3 2X+3  X  X  3  3  6 X+6 X+6 2X+6 2X+6  0  6 X+3 2X+6 2X+6  X  6 2X+6 2X+3  0 2X+6  6  0 2X 2X X+3  3 X+6  0 2X+6 X+3 X+6  X 2X 2X+6 2X 2X 2X+6  X  6  3  0  6  0  X  6 2X+3 X+3  6 X+6 2X  0 2X+6  3 X+3 2X  6  0 X+3 2X+6 2X+6 2X  X  0 X+6
 0  0  X 2X  6 2X+3  X X+3 2X+6 2X+3  0 2X+3  6 2X  6  X  X X+6 2X  0 X+6 2X 2X+3 X+6 X+6  0  3 2X+3  X  0 2X+3  6 X+3  3 2X+6  X 2X+6 X+3 2X+6  3 X+6 X+6  3  3 2X+3 2X+6  6  6 X+6 2X+6  X  3 X+6 X+3  0 2X+6 2X+6 2X+6 2X+3 2X+3 X+3  3  0  0 X+3 X+6  3  X  3  X  6  X X+3 2X+3  X  X  0 2X  3  3  X X+6  X  3  3  X  0  3  0 2X 2X
 0  0  0  6  0  0  0  0  0  0  3  6  3  6  3  3  6  3  3  6  3  3  3  6  6  3  6  3  3  6  6  0  6  3  3  3  3  6  0  3  0  0  6  6  0  0  0  3  3  6  6  0  0  0  3  0  6  3  0  6  3  3  0  6  6  3  0  6  0  0  3  3  0  6  6  0  3  6  0  6  3  6  0  0  0  6  3  0  3  3  0

generates a code of length 91 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 174.

Homogenous weight enumerator: w(x)=1x^0+110x^174+198x^175+186x^176+326x^177+390x^178+456x^179+482x^180+840x^181+720x^182+862x^183+756x^184+474x^185+250x^186+78x^187+48x^188+52x^189+66x^190+12x^191+46x^192+48x^193+24x^194+28x^195+36x^196+18x^197+24x^198+12x^199+6x^200+2x^201+6x^202+2x^207+2x^249

The gray image is a code over GF(3) with n=819, k=8 and d=522.
This code was found by Heurico 1.16 in 0.753 seconds.