The generator matrix

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

generates a code of length 73 over Z4 who´s minimum homogenous weight is 68.

Homogenous weight enumerator: w(x)=1x^0+160x^68+72x^70+74x^72+97x^76+48x^78+21x^80+26x^84+8x^86+5x^92

The gray image is a code over GF(2) with n=146, k=9 and d=68.
This code was found by Heurico 1.16 in 1.54 seconds.