The generator matrix

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

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+9x^6+16x^8+32x^9+143x^10+32x^11+12x^12+7x^14+3x^16+1x^18

The gray image is a linear code over GF(2) with n=40, k=8 and d=12.
This code was found by Heurico 1.16 in 0.000458 seconds.