The generator matrix
1 0 0 0 0 1 1 1 1 X+2 1 1 2 X 2
0 1 0 0 0 0 3 X+1 3 1 1 X+1 1 X+2 0
0 0 1 0 0 1 1 X 0 3 X+3 3 X+2 1 2
0 0 0 1 0 1 2 0 X+1 3 1 2 1 X+2 1
0 0 0 0 1 1 X+2 1 X 3 3 X+3 1 X+1 X
0 0 0 0 0 X 0 2 X+2 X+2 2 X+2 0 X+2 X+2
generates a code of length 15 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 9.
Homogenous weight enumerator: w(x)=1x^0+300x^9+1122x^10+2964x^11+8437x^12+14636x^13+25113x^14+25636x^15+25538x^16+14628x^17+8345x^18+3004x^19+1031x^20+260x^21+43x^22+12x^23+1x^24+1x^26
The gray image is a code over GF(2) with n=60, k=17 and d=18.
This code was found by Heurico 1.13 in 37.5 seconds.