The generator matrix

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

generates a code of length 15 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 11.

Homogenous weight enumerator: w(x)=1x^0+52x^11+72x^12+248x^13+306x^14+680x^15+347x^16+256x^17+12x^18+36x^19+28x^20+8x^21+2x^22

The gray image is a code over GF(2) with n=120, k=11 and d=44.
This code was found by Heurico 1.16 in 14.5 seconds.