The generator matrix

 1  0  0  1  1  1  1  1  1
 0  1  0  1  a a^2 a^6*X+a^3 a^6*X+a^4 a^5
 0  0  1 a^6  a a^4  1 a^5 a^3

generates a code of length 9 over F8[X]/(X^2) who´s minimum homogenous weight is 49.

Homogenous weight enumerator: w(x)=1x^0+2016x^49+4284x^56+28224x^57+100352x^63+28287x^64+98784x^65+196x^72

The gray image is a linear code over GF(8) with n=72, k=6 and d=49.
This code was found by Heurico 1.16 in 0.544 seconds.