The generator matrix

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

generates a code of length 26 over F9[X]/(X^2) who´s minimum homogenous weight is 171.

Homogenous weight enumerator: w(x)=1x^0+1160x^171+3128x^180+5456x^189+9120x^198+13800x^207+472392x^208+14640x^216+9232x^225+2512x^234

The gray image is a linear code over GF(9) with n=234, k=6 and d=171.
This code was found by Heurico 1.16 in 45.4 seconds.