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

generates a code of length 83 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+37x^70+79x^72+116x^74+131x^76+180x^78+276x^80+1304x^82+1264x^84+205x^86+162x^88+110x^90+72x^92+55x^94+35x^96+20x^98+20x^100+18x^102+6x^104+2x^106+1x^108+1x^110+1x^136

The gray image is a code over GF(2) with n=332, k=12 and d=140.
This code was found by Heurico 1.16 in 2.16 seconds.