The generator matrix

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

generates a code of length 73 over Z8 who´s minimum homogenous weight is 68.

Homogenous weight enumerator: w(x)=1x^0+207x^68+132x^69+346x^70+108x^71+344x^72+116x^73+255x^74+56x^75+118x^76+44x^77+120x^78+20x^79+74x^80+20x^81+36x^82+8x^83+18x^84+8x^85+10x^86+5x^88+1x^90+1x^92

The gray image is a code over GF(2) with n=292, k=11 and d=136.
This code was found by Heurico 1.16 in 0.324 seconds.