The generator matrix

 1  0  1  1  1  1  1 X+6  1  1  1 2X  1  1 X+6  1  1  0  1  1  1  1  1 2X  1  1 2X+3  1  1  1 X+3  1  1  1  1  0  1  1  3  1  1  3  1  1  1  1  1  0  1  1  1  1  1  1 2X X+6  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  3  1  1  1  1  1  1  6 2X+6  1  1  1  1  1
 0  1 2X+7  8 X+6 X+1 X+5  1 2X  7 2X+8  1 2X+7 X+6  1  8  0  1 2X X+1 X+5  7 2X+8  1  3 2X+4  1  2 X+4 X+3  1 X+5 2X+2 2X  7  1 2X+3  4  1 X+2 2X  1 2X+3  7 X+5  4 X+2  1  0 X+6 2X+7 X+1  8 2X+8  1  1 X+1 2X+7  0 X+6  3 X+3 2X+4 X+4  3 2X+4 X+3 X+4  3 2X+1 2X+3  4 X+2  5  2  1  1 X+3 X+7 2X+2  2  1 2X+6  1  1 X+2 2X+8  8 X+8  0
 0  0  6  0  6  3  3  0  0  3  6  6  0  3  6  6  3  3  6  0  3  6  0  3  6  3  0  3  6  0  3  0  3  0  0  3  3  3  6  6  3  6  6  6  6  0  0  0  0  6  6  3  0  0  0  6  6  0  3  3  6  0  3  0  3  6  6  0  0  3  6  0  6  0  6  3  0  3  3  6  3  6  0  6  3  0  6  3  3  0
 0  0  0  3  3  6  3  3  3  0  6  0  0  3  3  3  0  3  0  6  6  6  6  0  0  0  0  3  6  3  3  6  6  0  6  0  0  6  3  6  3  0  3  0  3  0  3  3  3  0  6  0  6  3  3  0  0  6  3  0  3  0  6  0  6  3  6  3  6  3  6  3  0  0  6  6  6  6  3  0  0  3  6  6  6  0  3  6  0  3

generates a code of length 90 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 174.

Homogenous weight enumerator: w(x)=1x^0+148x^174+12x^175+1584x^176+742x^177+60x^178+1278x^179+370x^180+72x^181+378x^182+180x^183+6x^184+1170x^185+394x^186+12x^187+126x^188+18x^189+2x^195+2x^198+2x^201+2x^204+2x^216

The gray image is a code over GF(3) with n=810, k=8 and d=522.
This code was found by Heurico 1.16 in 0.484 seconds.