The generator matrix

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

generates a code of length 8 over F9[X]/(X^2) who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+504x^48+224x^54+1944x^56+8064x^57+192x^63+15552x^65+32256x^66+312x^72

The gray image is a linear code over GF(9) with n=72, k=5 and d=48.
This code was found by Heurico 1.16 in 0.0208 seconds.