The generator matrix

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

generates a code of length 58 over Z4 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+121x^48+228x^50+508x^52+400x^54+583x^56+496x^58+547x^60+456x^62+379x^64+172x^66+122x^68+40x^70+35x^72+7x^76+1x^80

The gray image is a code over GF(2) with n=116, k=12 and d=48.
This code was found by Heurico 1.16 in 2.29 seconds.