The generator matrix

 1  0  1  1  1  1  1  0  1
 0  1  1  3 5X+2  6 5X+1  1  0
 0  0 5X  0 5X  X 2X 5X  0
 0  0  0  X 4X 4X 6X 5X  0

generates a code of length 9 over Z7[X]/(X^2) who´s minimum homogenous weight is 35.

Homogenous weight enumerator: w(x)=1x^0+126x^35+2940x^42+6174x^48+7440x^49+28812x^54+37044x^55+34440x^56+672x^63

The gray image is a linear code over GF(7) with n=63, k=6 and d=35.
This code was found by Heurico 1.16 in 0.311 seconds.