The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  X
 0  X  0  3 2X X+6  X 2X+6 2X  3 X+6 2X+6  6  3  X 2X+3 X+6 2X  0 X+6  6 X+6
 0  0  X 2X+6  3 2X+6  X X+6 2X+3  3 X+6 2X  X  6  3 X+6  6 X+3 2X  X 2X+6 2X+3

generates a code of length 22 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+168x^40+338x^42+228x^43+648x^44+510x^45+162x^46+36x^48+48x^49+2x^51+42x^52+2x^54+2x^60

The gray image is a code over GF(3) with n=198, k=7 and d=120.
This code was found by Heurico 1.16 in 0.101 seconds.