The generator matrix

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

generates a code of length 73 over Z4 who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+82x^63+160x^64+180x^65+190x^66+216x^67+271x^68+252x^69+231x^70+236x^71+253x^72+220x^73+199x^74+196x^75+205x^76+232x^77+144x^78+154x^79+173x^80+108x^81+94x^82+112x^83+75x^84+28x^85+33x^86+24x^87+13x^88+4x^89+5x^90+4x^91+1x^92

The gray image is a code over GF(2) with n=146, k=12 and d=63.
This code was found by Heurico 1.16 in 12.5 seconds.