The generator matrix

 1  0  0  1  1  1  6  2  1  1  1  2  4  1  0  1  1  4  1  1  6  1  6  1  1  1  0  2  1  4  1  1  6  2  1  0  1  0  1  1  1  1  1  4  1  1  1  0  1  1  2  1  1  1  1  1  1  6  1  1  1  4  1  1  1  2  6  1
 0  1  0  0  1  5  1  1  4  7  3  4  1  2  1  2  6  1  3  7  6  2  0  3  6  7  1  1  5  1  4  6  1  1  0  6  1  1  7  1  4  5  4  4  2  4  2  1  3  7  1  3  7  5  1  2  0  1  2  1  3  6  1  5  5  1  2  3
 0  0  1  3  3  0  7  2  6  2  1  1  1  5  6  6  7  7  0  7  1  4  1  1  3  6  4  7  4  2  3  2  1  4  1  1  3  5  1  3  2  6  4  1  1  3  5  6  4  0  0  3  2  6  0  7  1  2  2  1  7  1  2  7  5  2  1  5
 0  0  0  4  0  0  4  4  4  4  4  4  0  0  0  4  0  0  4  4  0  0  4  0  4  0  4  4  0  4  4  0  0  0  4  0  0  4  0  4  4  4  4  4  0  0  4  0  0  4  4  0  4  0  4  0  4  0  0  4  0  4  0  4  0  0  0  0
 0  0  0  0  4  4  4  4  0  4  4  0  4  0  4  4  4  0  0  0  4  4  4  0  4  0  0  0  0  0  4  0  0  4  0  0  0  4  4  0  4  4  0  4  4  0  0  0  4  4  0  4  0  0  0  0  4  0  4  4  0  0  4  4  4  4  0  0

generates a code of length 68 over Z8 who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+120x^63+249x^64+268x^65+211x^66+226x^67+230x^68+156x^69+133x^70+72x^71+97x^72+82x^73+39x^74+50x^75+38x^76+32x^77+15x^78+12x^79+8x^80+6x^81+2x^82+1x^88

The gray image is a code over GF(2) with n=272, k=11 and d=126.
This code was found by Heurico 1.16 in 0.268 seconds.