The generator matrix

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

generates a code of length 67 over Z8 who´s minimum homogenous weight is 61.

Homogenous weight enumerator: w(x)=1x^0+118x^61+364x^62+362x^63+508x^64+372x^65+422x^66+272x^67+319x^68+252x^69+282x^70+194x^71+203x^72+116x^73+142x^74+76x^75+33x^76+22x^77+18x^78+8x^79+8x^80+4x^82

The gray image is a code over GF(2) with n=268, k=12 and d=122.
This code was found by Heurico 1.16 in 0.61 seconds.