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

generates a code of length 69 over Z8 who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+38x^60+88x^61+144x^62+206x^63+205x^64+252x^65+299x^66+350x^67+386x^68+346x^69+347x^70+308x^71+274x^72+224x^73+166x^74+138x^75+82x^76+64x^77+54x^78+52x^79+28x^80+12x^81+11x^82+10x^84+6x^85+2x^86+2x^87+1x^102

The gray image is a code over GF(2) with n=276, k=12 and d=120.
This code was found by Heurico 1.16 in 1.16 seconds.