The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  X  0  X a*X a*X a^2*X a^5*X  0  X a*X 2*X a^2*X 2*X a^2*X a^3*X a^5*X 2*X  0 a*X a^3*X a^3*X 2*X a^5*X a^2*X
 0  0  X a^7*X a*X a^2*X a^6*X a^7*X a^3*X a^6*X 2*X a*X 2*X a^2*X  0  0 a^6*X 2*X a^2*X a^6*X a^7*X a^5*X a^3*X a^3*X a^2*X

generates a code of length 25 over F9[X]/(X^2) who´s minimum homogenous weight is 189.

Homogenous weight enumerator: w(x)=1x^0+264x^189+248x^198+5832x^200+72x^207+56x^216+88x^225

The gray image is a linear code over GF(9) with n=225, k=4 and d=189.
This code was found by Heurico 1.16 in 0.00678 seconds.