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

generates a code of length 69 over Z8 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+37x^66+42x^67+57x^68+42x^69+16x^70+18x^71+3x^72+22x^73+1x^74+4x^75+3x^76+2x^78+8x^82

The gray image is a code over GF(2) with n=276, k=8 and d=132.
This code was found by Heurico 1.16 in 0.129 seconds.