The generator matrix

 1  0  0  1  1  1  X  1  1  X  1  1  0  X  1  1  X  0  1  1  0  1  1  1  1  X  0  X  1  1  0  1  1  0  X  1  1  1  1  1  1  1  1  1  1  1  1  0  X  0  X  X  0  0  X  X  X  X  X  X  0  0  0  1  1  0  1  1  0  X  1
 0  1  0  X  1 X+1  1  X  0  0  1 X+1  1  1 X+1  1  1  1  X  0  X X+1  X  0  1  1  1  X  0  X  0  1 X+1  1  1  0  X  X  1 X+1  0 X+1  1  X  0 X+1  1  1  1  X  1  1  1  1  X  0  0  0  X  X  X  X  0  0  X  0  1 X+1  1  1  0
 0  0  1  1 X+1  X  1 X+1  X  1  1  0  X X+1 X+1  X  X X+1  X X+1  1  1  0  1  0  0  1  1  0  1  1  1  0  X  1  X  0 X+1 X+1  X X+1 X+1  X  X  1  1  0  0 X+1  1  X  0 X+1  1  1  1  0  X  X  0  0  X  X  0  1  1  1  0  X  1  X

generates a code of length 71 over Z2[X]/(X^2) who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+8x^70+24x^71+13x^72+8x^74+8x^75+2x^76

The gray image is a linear code over GF(2) with n=142, k=6 and d=70.
This code was found by Heurico 1.16 in 0.0544 seconds.