The generator matrix

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

generates a code of length 73 over Z4 who´s minimum homogenous weight is 69.

Homogenous weight enumerator: w(x)=1x^0+52x^69+45x^70+51x^72+36x^73+28x^77+15x^78+11x^80+12x^81+3x^86+1x^94+1x^120

The gray image is a code over GF(2) with n=146, k=8 and d=69.
This code was found by Heurico 1.16 in 65.7 seconds.