The generator matrix

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

generates a code of length 36 over Z7[X]/(X^2) who´s minimum homogenous weight is 207.

Homogenous weight enumerator: w(x)=1x^0+2100x^207+1890x^208+108x^210+3150x^214+1512x^215+216x^217+5040x^221+2772x^222+18x^252

The gray image is a linear code over GF(7) with n=252, k=5 and d=207.
This code was found by Heurico 1.16 in 63.7 seconds.