The generator matrix

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

generates a code of length 70 over Z4 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+30x^66+40x^67+28x^68+42x^69+27x^70+18x^71+13x^72+16x^73+15x^74+4x^75+3x^76+2x^77+3x^78+2x^79+1x^80+4x^81+3x^82+2x^86+1x^88+1x^92

The gray image is a code over GF(2) with n=140, k=8 and d=66.
This code was found by Heurico 1.16 in 0.0646 seconds.