The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  1  1  1  X
 0  3  0  0  0  0  3  6  6  0  0  3  3  3  3  3  3  3  0  6  0  0  3  3
 0  0  3  0  0  3  6  0  6  0  3  3  6  6  0  3  0  0  3  3  3  6  6  6
 0  0  0  3  0  6  6  3  0  3  3  0  0  3  6  3  3  3  0  3  3  0  6  0
 0  0  0  0  3  6  6  6  6  6  0  6  0  0  6  6  0  3  6  6  3  0  0  3

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+64x^42+54x^44+64x^45+216x^47+1494x^48+216x^50+24x^51+8x^54+32x^57+2x^60+8x^63+4x^66

The gray image is a code over GF(3) with n=216, k=7 and d=126.
This code was found by Heurico 1.16 in 0.0155 seconds.