The generator matrix

 1  0  1  1  1  0  1  1  0  1  1  1  1  1
 0  1  1  0  1  1  0  1  1  0  0  0  0  0
 0  0  2  0  0  0  0  0  0  0  0  2  0  2
 0  0  0  2  0  0  0  0  0  0  0  2  2  2
 0  0  0  0  2  0  0  0  0  0  2  0  2  2
 0  0  0  0  0  2  0  0  0  0  2  0  0  2
 0  0  0  0  0  0  2  0  0  0  2  0  2  0
 0  0  0  0  0  0  0  2  0  0  2  2  0  2
 0  0  0  0  0  0  0  0  2  0  0  2  2  0
 0  0  0  0  0  0  0  0  0  2  2  2  2  2

generates a code of length 14 over Z4 who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+32x^6+109x^8+224x^10+256x^11+392x^12+768x^13+512x^14+768x^15+427x^16+256x^17+224x^18+88x^20+32x^22+7x^24

The gray image is a code over GF(2) with n=28, k=12 and d=6.
This code was found by Heurico 1.16 in 0.0597 seconds.