The generator matrix

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

generates a code of length 24 over Z4 who´s minimum homogenous weight is 24.

Homogenous weight enumerator: w(x)=1x^0+3x^24+6x^25+4x^26+2x^29

The gray image is a code over GF(2) with n=48, k=4 and d=24.
This code was found by Heurico 1.16 in 0.00168 seconds.