The generator matrix

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

generates a code of length 20 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 37.

Homogenous weight enumerator: w(x)=1x^0+366x^37+276x^38+12x^39+672x^40+468x^41+10x^42+366x^43+2x^45+12x^47+2x^51

The gray image is a code over GF(3) with n=180, k=7 and d=111.
This code was found by Heurico 1.16 in 5.36 seconds.