The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  X  X  X  1
 0  X  0  0  0  0  0  0  0  0  X  X  0  0  0  X  X  X  X  X  0
 0  0  X  0  0  0  0  0  0  X  X  X  0  X  X  0  X  X  0  0  0
 0  0  0  X  0  0  0  0  0  X  0  X  X  X  0  X  0  X  X  0  0
 0  0  0  0  X  0  0  0  X  0  0  X  X  0  X  X  0  0  X  X  0
 0  0  0  0  0  X  0  0  X  0  X  0  0  X  X  X  0  X  X  0  0
 0  0  0  0  0  0  X  0  X  X  X  0  0  0  X  X  X  0  0  X  0
 0  0  0  0  0  0  0  X  X  X  0  0  X  X  X  0  X  0  X  0  0

generates a code of length 21 over Z2[X]/(X^2) who´s minimum homogenous weight is 16.

Homogenous weight enumerator: w(x)=1x^0+78x^16+32x^17+52x^18+192x^21+48x^24+32x^25+72x^26+1x^32+4x^34

The gray image is a linear code over GF(2) with n=42, k=9 and d=16.
This code was found by Heurico 1.16 in 0.016 seconds.