The generator matrix

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

generates a code of length 23 over Z2[X]/(X^2) who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+32x^18+42x^19+49x^20+70x^21+54x^22+52x^23+51x^24+44x^25+28x^26+34x^27+23x^28+14x^29+14x^30+4x^32

The gray image is a linear code over GF(2) with n=46, k=9 and d=18.
This code was found by Heurico 1.16 in 0.0105 seconds.