The generator matrix

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

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+2016x^48+224x^54+15552x^56+32256x^57+192x^63+227448x^64+124416x^65+129024x^66+312x^72

The gray image is a linear code over GF(9) with n=72, k=6 and d=48.
This code was found by Heurico 1.16 in 1.33 seconds.