The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  X
 0  X  0 X^2+X  0 X^2+X  0  X X^2 X^2+X X^2 X^2+X X^2  X X^2  X  0 X^2+X  0 X^2+X  0 X^2
 0  0 X^2  0  0 X^2 X^2 X^2 X^2  0 X^2 X^2  0 X^2  0  0  0  0  0 X^2 X^2 X^2
 0  0  0 X^2 X^2 X^2 X^2  0  0  0 X^2  0 X^2 X^2  0 X^2  0  0 X^2 X^2  0  0

generates a code of length 22 over Z2[X]/(X^3) who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+22x^20+84x^22+16x^24+4x^26+1x^40

The gray image is a linear code over GF(2) with n=88, k=7 and d=40.
This code was found by Heurico 1.16 in 0.00332 seconds.