The generator matrix

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

generates a code of length 10 over Z2[X]/(X^3) who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+18x^6+64x^8+128x^9+92x^10+128x^11+60x^12+18x^14+3x^16

The gray image is a linear code over GF(2) with n=40, k=9 and d=12.
This code was found by Heurico 1.16 in 0.00105 seconds.