The generator matrix

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

generates a code of length 74 over Z4 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+144x^64+372x^66+487x^68+452x^70+472x^72+442x^74+426x^76+410x^78+330x^80+218x^82+187x^84+78x^86+60x^88+8x^90+4x^92+4x^94+1x^96

The gray image is a code over GF(2) with n=148, k=12 and d=64.
This code was found by Heurico 1.16 in 2.78 seconds.