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

generates a code of length 66 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+125x^56+364x^58+36x^59+549x^60+152x^61+686x^62+320x^63+899x^64+488x^65+984x^66+536x^67+933x^68+360x^69+624x^70+128x^71+481x^72+24x^73+232x^74+4x^75+179x^76+50x^78+27x^80+4x^82+3x^84+2x^88+1x^96

The gray image is a code over GF(2) with n=264, k=13 and d=112.
This code was found by Heurico 1.16 in 4.6 seconds.