The generator matrix

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

generates a code of length 20 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 35.

Homogenous weight enumerator: w(x)=1x^0+150x^35+348x^36+1212x^38+1128x^39+2322x^41+1152x^42+192x^44+36x^45+12x^47+6x^48+2x^54

The gray image is a code over GF(3) with n=180, k=8 and d=105.
This code was found by Heurico 1.16 in 1.36 seconds.