The generator matrix

 1  0  1  1  1  1  1 X+6  1  1  1 2X  1  1  0  1  1  1 X+6  1  1  1  1  1
 0  1 2X+7  8 X+6 X+1 X+5  1 2X 2X+8  7  1 X+1 X+6  1  8 2X+7 2X+8  1 2X+8 X+5  8 2X  0
 0  0  6  0  6  3  3  3  0  0  3  0  3  6  0  6  0  3  6  6  6  0  3  3
 0  0  0  3  6  6  3  0  3  6  0  6  3  0  3  6  0  6  3  0  6  0  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+66x^42+582x^44+272x^45+324x^46+1842x^47+498x^48+648x^49+1872x^50+348x^51+66x^53+22x^54+12x^56+6x^57+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 0.0415 seconds.