The generator matrix

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

generates a code of length 15 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 10.

Homogenous weight enumerator: w(x)=1x^0+14x^10+8x^11+29x^12+32x^13+89x^14+176x^15+82x^16+32x^17+21x^18+8x^19+15x^20+3x^22+1x^24+1x^26

The gray image is a code over GF(2) with n=60, k=9 and d=20.
This code was found by Heurico 1.16 in 0.00314 seconds.