The generator matrix

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

generates a code of length 10 over Z2[X]/(X^3) who´s minimum homogenous weight is 4.

Homogenous weight enumerator: w(x)=1x^0+101x^4+560x^6+1946x^8+11168x^10+1946x^12+560x^14+101x^16+1x^20

The gray image is a linear code over GF(2) with n=40, k=14 and d=8.
This code was found by Heurico 1.16 in 0.25 seconds.