The generator matrix

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

generates a code of length 22 over F9[X]/(X^2) who´s minimum homogenous weight is 162.

Homogenous weight enumerator: w(x)=1x^0+1864x^162+3888x^168+7240x^171+31104x^177+14736x^180+136x^189+80x^198

The gray image is a linear code over GF(9) with n=198, k=5 and d=162.
This code was found by Heurico 1.16 in 0.122 seconds.