The generator matrix

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

generates a code of length 23 over F9[X]/(X^2) who´s minimum homogenous weight is 168.

Homogenous weight enumerator: w(x)=1x^0+936x^168+7344x^169+9936x^170+184x^171+6480x^176+14976x^177+51408x^178+39744x^179+272x^180+64152x^184+51840x^185+59904x^186+139536x^187+84456x^188+104x^189+80x^198+88x^207

The gray image is a linear code over GF(9) with n=207, k=6 and d=168.
This code was found by Heurico 1.16 in 8.07 seconds.