The generator matrix

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

generates a code of length 24 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+242x^42+108x^43+162x^44+358x^45+462x^46+774x^47+2372x^48+750x^49+414x^50+514x^51+90x^52+90x^53+134x^54+42x^55+18x^56+22x^57+6x^58+2x^63

The gray image is a code over GF(3) with n=216, k=8 and d=126.
This code was found by Heurico 1.16 in 0.0723 seconds.