The generator matrix

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

generates a code of length 19 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+764x^30+720x^31+3912x^32+7960x^33+19848x^34+21438x^35+67618x^36+71634x^37+94722x^38+125328x^39+72180x^40+29010x^41+13752x^42+2274x^43+108x^44+112x^45+42x^46+12x^47+4x^48+2x^51

The gray image is a code over GF(3) with n=171, k=12 and d=90.
This code was found by Heurico 1.16 in 114 seconds.