The generator matrix

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

generates a code of length 51 over Z2[X]/(X^2) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+148x^42+387x^44+458x^46+555x^48+551x^50+525x^52+523x^54+395x^56+321x^58+170x^60+39x^62+13x^64+8x^66+2x^68

The gray image is a linear code over GF(2) with n=102, k=12 and d=42.
This code was found by Heurico 1.16 in 1.66 seconds.