The generator matrix

 1  0  0  1  1  1  2  1  1  2  1  1  0  2  1  1  2  0  1  1  2  0  1  1  0  1  1  2  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0  0  2  2  2  2  0
 0  1  0  2  1  3  1  0  2  0  1  3  1  1  3  1  1  1  3  1  1  1  2  0  2  2  0  2  0  0  2  2  2  2  0  0  1  1  3  3  3  3  1  1  1  1  1  1  1  1  1
 0  0  1  1  3  2  1  2  3  1  1  0  2  3  3  2  2  3  1  0  0  1  2  3  1  0  1  1  0  2  2  0  1  3  3  1  1  3  3  1  0  2  2  0  0  2  2  0  1  3  3

generates a code of length 51 over Z4 who´s minimum homogenous weight is 50.

Homogenous weight enumerator: w(x)=1x^0+12x^50+32x^51+12x^52+2x^54+2x^56+2x^62+1x^64

The gray image is a code over GF(2) with n=102, k=6 and d=50.
This code was found by Heurico 1.16 in 0.0236 seconds.