The generator matrix

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

generates a code of length 29 over Z7[X]/(X^2) who´s minimum homogenous weight is 164.

Homogenous weight enumerator: w(x)=1x^0+1008x^164+1680x^165+168x^168+2688x^171+2520x^172+126x^175+4536x^178+4032x^179+48x^196

The gray image is a linear code over GF(7) with n=203, k=5 and d=164.
This code was found by Heurico 1.16 in 0.744 seconds.