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

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

Homogenous weight enumerator: w(x)=1x^0+152x^68+16x^69+20x^70+96x^71+111x^72+288x^73+40x^74+96x^75+106x^76+16x^77+4x^78+71x^80+6x^84+1x^136

The gray image is a code over GF(2) with n=292, k=10 and d=136.
This code was found by Heurico 1.16 in 4.43 seconds.