The generator matrix

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

generates a code of length 51 over Z4 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+78x^48+96x^50+32x^54+48x^56+1x^96

The gray image is a code over GF(2) with n=102, k=8 and d=48.
This code was found by Heurico 1.16 in 0.0623 seconds.