The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+164x^64+398x^66+446x^68+452x^70+473x^72+414x^74+443x^76+392x^78+336x^80+244x^82+163x^84+96x^86+42x^88+20x^90+12x^92

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 2.72 seconds.