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  4  1  1  1  0  0  2  1  1  1  1  1  1  1  1  2  4  2  2  1  0  2  1  1  1  2  1  2  1  2  1  2  1  1  2  1  2  0  2  1
 0  2  0  0  0  2  6  2  0  0  4  4  2  2  6  2  0  4  2  2  6  4  2  0  0  4  6  4  2  2  6  2  6  6  2  4  2  2  4  6  0  0  2  4  0  0  2  2  0  4  6  2  2  0  0  4  4  2  2  2  4  2  2  6  6  2  4  2  2  2  0
 0  0  2  0  2  2  6  0  0  4  2  2  2  6  4  0  0  0  6  0  4  2  2  2  6  6  2  0  0  4  6  0  4  0  2  4  0  0  2  6  4  2  4  2  0  0  6  6  6  4  6  6  0  4  0  6  0  4  2  6  6  4  4  4  0  4  6  6  2  6  0
 0  0  0  2  2  0  6  2  4  2  2  0  0  2  0  6  4  2  0  4  6  6  6  4  6  0  4  0  2  0  2  2  0  2  2  2  4  6  6  2  4  4  0  6  6  6  0  4  4  2  2  6  4  2  2  2  6  4  0  0  0  6  0  6  4  0  0  6  6  4  4
 0  0  0  0  4  0  0  0  0  0  0  4  4  4  0  0  4  0  0  0  4  4  4  0  0  4  4  4  4  4  0  0  4  4  0  0  0  4  4  0  4  0  0  4  0  4  0  4  4  0  0  0  0  4  4  4  0  4  4  4  0  0  0  4  0  4  4  4  0  4  4
 0  0  0  0  0  4  0  4  4  0  4  4  4  0  4  0  4  4  0  0  0  0  0  4  0  4  4  0  0  0  4  0  4  4  4  0  4  0  4  0  0  4  4  4  4  4  0  0  4  4  0  0  0  0  4  4  0  0  0  0  0  0  0  0  0  4  4  4  4  0  0
 0  0  0  0  0  0  4  4  0  4  4  0  4  4  4  4  4  4  4  4  4  4  0  4  0  4  0  0  0  0  0  0  4  0  4  4  4  4  0  0  4  0  0  4  0  0  0  0  4  0  4  0  0  0  4  0  0  4  4  4  0  0  4  0  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+71x^62+72x^63+151x^64+156x^65+193x^66+256x^67+277x^68+432x^69+383x^70+332x^71+342x^72+390x^73+248x^74+168x^75+168x^76+110x^77+80x^78+56x^79+69x^80+54x^81+34x^82+8x^83+14x^84+10x^85+14x^86+4x^87+1x^88+1x^92+1x^106

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 1.27 seconds.