The generator matrix

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

generates a code of length 10 over Z2[X]/(X^3) who´s minimum homogenous weight is 9.

Homogenous weight enumerator: w(x)=1x^0+6x^9+19x^10+3x^12+2x^13+1x^14

The gray image is a linear code over GF(2) with n=40, k=5 and d=18.
This code was found by Heurico 1.16 in 0.000216 seconds.