The generator matrix

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

generates a code of length 9 over F9[X]/(X^2) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+648x^64+720x^72+5184x^73+8x^81

The gray image is a linear code over GF(9) with n=81, k=4 and d=64.
This code was found by Heurico 1.16 in 0.000507 seconds.