The generator matrix

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

generates a code of length 29 over F9[X]/(X^2) who´s minimum homogenous weight is 216.

Homogenous weight enumerator: w(x)=1x^0+320x^216+1296x^217+648x^219+3760x^225+9072x^226+1944x^228+13960x^234+24624x^235+3240x^237+48x^243+80x^252+56x^261

The gray image is a linear code over GF(9) with n=261, k=5 and d=216.
This code was found by Heurico 1.16 in 0.184 seconds.