The generator matrix

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

generates a code of length 74 over Z4 who´s minimum homogenous weight is 68.

Homogenous weight enumerator: w(x)=1x^0+80x^68+78x^70+97x^72+66x^74+69x^76+34x^78+38x^80+14x^82+25x^84+6x^88+1x^96+1x^100+1x^104+1x^108

The gray image is a code over GF(2) with n=148, k=9 and d=68.
This code was found by Heurico 1.16 in 0.127 seconds.