The generator matrix

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

generates a code of length 21 over F9[X]/(X^2) who´s minimum homogenous weight is 153.

Homogenous weight enumerator: w(x)=1x^0+328x^153+1296x^154+3888x^160+1816x^162+5184x^163+31104x^169+4200x^171+11016x^172+128x^180+88x^189

The gray image is a linear code over GF(9) with n=189, k=5 and d=153.
This code was found by Heurico 1.16 in 0.125 seconds.