The generator matrix

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

generates a code of length 20 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 32.

Homogenous weight enumerator: w(x)=1x^0+942x^32+902x^33+4158x^34+8334x^35+20456x^36+23460x^37+67668x^38+69154x^39+90906x^40+125670x^41+70140x^42+31536x^43+14508x^44+3312x^45+102x^46+120x^47+56x^48+12x^49+4x^51

The gray image is a code over GF(3) with n=180, k=12 and d=96.
This code was found by Heurico 1.16 in 123 seconds.