The generator matrix

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

generates a code of length 10 over F9[X]/(X^2) who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+1680x^54+2880x^63+14040x^72+472392x^80+22160x^81+18288x^90

The gray image is a linear code over GF(9) with n=90, k=6 and d=54.
This code was found by Heurico 1.16 in 4.63 seconds.