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  X
 0  X  0  0  0  0  0  0  0  0  0  X  0  X  0  X  0  X  X  X  0  X  X  X  0  X  0  X  X  X  X  X  0  0  0  0  0  X  X
 0  0  X  0  0  0  0  0  0  0  X  0  X  0  X  0  X  X  X  0  X  X  X  0  X  X  X  X  X  X  0  0  0  0  0  0  X  X  0
 0  0  0  X  0  0  0  X  X  X  X  X  X  X  0  0  X  0  0  X  X  X  X  X  0  0  0  0  X  X  0  0  0  0  0  X  X  0  0
 0  0  0  0  X  0  X  X  X  0  0  0  0  0  0  0  X  0  X  X  X  X  0  X  X  0  X  X  X  0  X  X  0  0  X  X  0  0  0
 0  0  0  0  0  X  X  0  X  X  0  0  X  X  X  X  X  0  X  X  0  0  0  0  0  X  X  0  X  X  0  X  0  X  X  0  0  0  0

generates a code of length 39 over Z2[X]/(X^2) who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+21x^36+32x^38+67x^40+6x^44+1x^76

The gray image is a linear code over GF(2) with n=78, k=7 and d=36.
This code was found by Heurico 1.16 in 0.0131 seconds.