The generator matrix

 1  0  0  1  1  1  X  1  0  1  1  X  0  1  1  0  1  X  1  1  0  X  1
 0  1  0  1  0  1  1  0  1  1  X  1  X  1  1  1  X  0  0  0  1  1  0
 0  0  1  1  1  0  1  0 X+1  1 X+1 X+1  1 X+1  X  X  1  1  0  1  X X+1  0
 0  0  0  X  0  0  0  0  0  X  0  0  0  X  X  X  X  X  X  0  0  X  0
 0  0  0  0  X  0  0  X  X  X  0  X  0  0  X  0  X  X  0  0  X  X  0
 0  0  0  0  0  X  0  X  X  0  0  0  X  X  X  X  X  0  X  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+46x^19+60x^20+70x^21+44x^22+48x^23+39x^24+44x^25+40x^26+30x^27+23x^28+14x^29+12x^30+4x^31+4x^32+1x^36

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.