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

generates a code of length 71 over Z8 who´s minimum homogenous weight is 62.

Homogenous weight enumerator: w(x)=1x^0+56x^62+86x^63+132x^64+188x^65+149x^66+258x^67+327x^68+348x^69+430x^70+386x^71+347x^72+344x^73+259x^74+168x^75+151x^76+128x^77+90x^78+70x^79+54x^80+32x^81+32x^82+22x^83+10x^84+12x^85+7x^86+2x^87+2x^88+4x^89+1x^110

The gray image is a code over GF(2) with n=284, k=12 and d=124.
This code was found by Heurico 1.16 in 1.21 seconds.