The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  1  X  1  X  1  1
 0  X  0  0  0  0  0  0  0  X  0  0  0  X  X  0  X  X  0  0  X  0  X  0  0  0  X  X  0  X  0  X  X  X  0  0  X  0  X  X  0  X  X  0  0  0  X  0  X  X  0  0  X  X  X  X  X  0  0  X  X  X  0  0  0  X  0  X  0  X  X
 0  0  X  0  0  0  0  0  0  X  0  0  X  X  0  X  X  0  0  X  X  0  0  0  X  X  X  X  X  0  0  X  0  0  0  X  0  0  0  0  X  X  0  X  X  X  0  X  X  0  X  X  0  X  0  0  0  0  X  0  X  0  X  0  X  0  0  X  X  X  0
 0  0  0  X  0  0  0  0  0  X  0  X  X  X  X  X  0  X  0  0  0  X  0  0  X  0  0  X  X  0  0  0  X  0  X  0  0  0  X  0  X  X  X  0  X  0  X  X  X  X  0  X  0  0  0  X  X  X  0  0  X  0  0  X  0  X  0  0  X  X  0
 0  0  0  0  X  0  0  0  0  X  0  X  0  0  X  X  X  0  X  0  X  0  0  X  0  X  0  X  0  0  X  X  X  0  0  0  X  0  X  0  X  0  X  X  X  0  0  0  X  0  0  X  X  0  X  0  X  X  0  X  0  0  X  X  0  0  X  X  0  X  0
 0  0  0  0  0  X  0  0  0  X  X  0  X  0  X  X  X  X  X  X  X  X  X  X  0  0  0  0  0  0  0  X  0  0  X  0  X  X  X  X  0  0  0  0  0  0  0  0  0  0  X  0  0  X  X  X  0  X  X  X  X  0  0  X  0  0  X  0  0  X  X
 0  0  0  0  0  0  X  0  X  X  X  0  0  X  0  0  0  X  0  X  X  X  0  0  0  X  0  0  X  0  X  X  X  X  0  0  X  X  X  X  X  0  X  X  0  X  X  0  0  0  0  0  X  0  X  X  0  X  0  0  0  X  X  0  X  0  X  0  0  0  0
 0  0  0  0  0  0  0  X  X  0  X  0  X  X  X  0  X  X  0  X  0  0  0  X  0  0  X  0  0  X  X  X  0  X  0  X  0  0  0  0  0  0  X  X  X  X  X  X  X  X  0  0  X  0  X  0  0  0  X  0  0  0  X  0  0  0  X  X  0  X  X

generates a code of length 71 over Z2[X]/(X^2) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+71x^64+86x^68+96x^70+135x^72+32x^74+52x^76+32x^80+6x^84+1x^136

The gray image is a linear code over GF(2) with n=142, k=9 and d=64.
This code was found by Heurico 1.16 in 0.125 seconds.