The generator matrix

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

generates a code of length 21 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 38.

Homogenous weight enumerator: w(x)=1x^0+132x^38+10x^39+408x^40+462x^41+8x^42+624x^43+480x^44+48x^46+6x^47+2x^48+4x^51+2x^54

The gray image is a code over GF(3) with n=189, k=7 and d=114.
This code was found by Heurico 1.16 in 0.00575 seconds.