The generator matrix

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

generates a code of length 11 over Z4 who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+30x^6+74x^8+142x^10+168x^12+74x^14+13x^16+10x^18

The gray image is a code over GF(2) with n=22, k=9 and d=6.
This code was found by Heurico 1.16 in 0.00136 seconds.