The generator matrix

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

generates a code of length 10 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 4.

Homogenous weight enumerator: w(x)=1x^0+84x^4+56x^5+232x^6+280x^7+462x^8+688x^9+4600x^10+688x^11+420x^12+280x^13+280x^14+56x^15+57x^16+8x^18

The gray image is a code over GF(2) with n=40, k=13 and d=8.
This code was found by Heurico 1.16 in 0.0632 seconds.