The generator matrix

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

generates a code of length 23 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+54x^45+162x^46+18x^48+8x^54

The gray image is a code over GF(3) with n=207, k=5 and d=135.
This code was found by Heurico 1.16 in 0.003 seconds.