The generator matrix

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

generates a code of length 9 over Z7[X]/(X^2) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+978x^42+840x^43+3822x^48+7656x^49+6258x^50+39102x^54+22932x^55+24522x^56+11424x^57+114x^63

The gray image is a linear code over GF(7) with n=63, k=6 and d=42.
This code was found by Heurico 1.16 in 0.352 seconds.