The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1  a a^7*X+a^2 a^3 a^7*X+2 a^7*X+a^6 a^5 a^7  a  0 a^7*X+a^6 a^7*X+2 a^5
 0  0 a^7*X  0 a^7*X  X a^6*X a^6*X 2*X a*X a*X  X a^7*X a^2*X a*X
 0  0  0  X a^7*X a^7*X  X a*X  X a^2*X  0 a^2*X a^5*X a^5*X a^6*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+648x^99+3240x^104+1048x^108+29160x^112+51840x^113+1368x^117+233280x^121+207360x^122+2448x^126+1048x^135

The gray image is a linear code over GF(9) with n=135, k=6 and d=99.
This code was found by Heurico 1.16 in 22.5 seconds.