The generator matrix

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

generates a code of length 17 over Z7[X]/(X^2) who´s minimum homogenous weight is 91.

Homogenous weight enumerator: w(x)=1x^0+432x^91+252x^92+1176x^96+2040x^98+672x^99+7056x^103+3948x^105+1134x^106+66x^112+30x^119

The gray image is a linear code over GF(7) with n=119, k=5 and d=91.
This code was found by Heurico 1.16 in 0.0244 seconds.