The generator matrix

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

generates a code of length 15 over F9[X]/(X^2) who´s minimum homogenous weight is 99.

Homogenous weight enumerator: w(x)=1x^0+672x^99+952x^108+1512x^117+52488x^120+2352x^126+1072x^135

The gray image is a linear code over GF(9) with n=135, k=5 and d=99.
This code was found by Heurico 1.16 in 0.181 seconds.