The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0  0  0  1  0  2  4  1  1  2  1  1  1  1  2  1  4  2  1  1  0  2  1  2  2  4  1  1  2  2  2  4  2  0  2  1
 0  2  0  0  0  2  6  2  0  0  4  2  4  2  6  2  2  4  0  2  6  2  0  4  6  2  4  2  6  4  0  0  4  2  0  2  0  0  6  0  4  2  2  6  4  6  0  2  2  4  4  2  6  4  2  6  0  6  2  0  0  4  2  4  2  2  0
 0  0  2  0  2  2  6  0  0  4  2  2  2  6  4  0  0  0  0  2  2  4  6  6  0  4  4  2  2  6  2  4  2  6  0  0  6  0  2  4  0  6  2  2  4  0  6  4  6  2  0  6  4  6  6  0  2  2  2  2  2  0  6  2  6  6  2
 0  0  0  2  2  0  6  2  4  2  2  0  4  6  0  2  6  2  0  6  4  0  6  0  4  2  6  0  2  2  4  2  4  6  0  4  0  2  2  0  2  4  2  0  2  4  6  6  0  2  6  4  2  2  0  4  2  4  4  4  4  6  6  4  4  0  2
 0  0  0  0  4  0  0  0  0  0  0  4  4  4  0  4  0  0  0  4  0  4  4  0  4  4  0  0  0  0  4  4  0  4  0  0  4  4  0  4  4  4  4  0  4  4  0  0  4  4  0  4  0  4  0  0  0  0  4  0  4  4  4  0  0  0  0
 0  0  0  0  0  4  0  4  4  0  4  4  0  4  4  4  0  4  0  0  4  0  0  0  4  0  4  0  4  4  0  4  0  0  4  0  4  0  4  0  0  0  4  0  0  4  0  0  0  4  0  4  0  4  0  4  4  0  0  4  0  4  4  0  4  4  0
 0  0  0  0  0  0  4  4  0  4  4  4  0  4  4  0  4  4  4  4  4  4  4  4  0  4  0  4  4  0  4  4  0  4  4  0  0  4  0  4  0  4  0  0  0  4  4  0  4  4  0  4  4  4  0  4  4  4  0  0  4  0  0  4  0  4  0

generates a code of length 67 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+51x^58+98x^59+145x^60+178x^61+218x^62+282x^63+293x^64+346x^65+356x^66+312x^67+347x^68+332x^69+281x^70+230x^71+153x^72+132x^73+71x^74+76x^75+64x^76+34x^77+39x^78+24x^79+21x^80+2x^81+5x^82+2x^83+2x^86+1x^90

The gray image is a code over GF(2) with n=268, k=12 and d=116.
This code was found by Heurico 1.16 in 1.13 seconds.