The generator matrix

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

generates a code of length 21 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 33.

Homogenous weight enumerator: w(x)=1x^0+60x^33+96x^34+156x^35+908x^36+774x^37+1884x^38+3664x^39+6474x^40+6816x^41+12718x^42+11586x^43+6864x^44+4890x^45+1458x^46+276x^47+308x^48+24x^49+42x^50+38x^51+6x^54+6x^57

The gray image is a code over GF(3) with n=189, k=10 and d=99.
This code was found by Heurico 1.16 in 2.22 seconds.