The generator matrix

 1  0  1  1  1  6  1  1  0  1  1  6  1  1  6  1  1  0  1  0  1  1  1  6  1  1  0  1  1  6  1  1  1  1  1  1  1  1  6  0  1  4  1  1  4  1  1  1  1  1  4  1  1  1  0  1  4  1  1  6  1  1  1  1  0  6
 0  1  3  6  1  1  0  3  1  6  5  1  0  3  1  6  5  1  5  1  0  6  3  1  6  3  1  0  4  1  6  5  6  2  7  0  5  7  1  1  4  1  2  0  1  6  0  3  2  3  1  1  5  0  1  6  1  1  6  1  7  5  2  2  1  1
 0  0  4  0  0  0  0  0  0  0  0  4  0  4  4  4  4  4  0  4  0  4  0  4  4  0  4  4  4  0  0  0  4  4  4  0  0  4  4  0  0  4  4  0  4  0  4  4  4  0  0  0  0  0  4  0  4  4  0  4  0  4  0  4  4  0
 0  0  0  4  0  0  0  0  0  4  0  4  4  0  4  0  4  0  4  0  4  4  0  0  4  0  0  4  0  0  4  4  0  4  0  4  0  0  4  0  4  0  0  4  0  4  0  4  4  0  0  0  0  4  4  0  4  4  4  0  4  4  0  0  4  0
 0  0  0  0  4  0  0  0  0  4  4  0  4  4  0  0  4  4  4  4  0  4  4  0  0  4  0  0  4  0  0  4  0  0  4  0  0  4  0  4  0  0  0  4  0  0  4  4  0  0  0  4  0  4  4  4  4  4  4  4  0  4  0  4  4  0
 0  0  0  0  0  4  0  0  4  0  4  4  0  0  4  4  4  0  0  4  0  4  4  0  4  4  0  0  0  4  4  4  0  0  0  0  0  4  0  0  0  4  0  0  4  4  4  4  4  4  0  0  4  4  4  4  4  0  0  0  0  0  0  4  0  0
 0  0  0  0  0  0  4  0  4  0  0  0  4  0  4  0  4  4  4  4  4  0  0  0  4  4  4  0  4  4  4  4  0  4  4  4  4  4  4  4  0  0  4  0  0  4  4  4  4  4  4  0  0  4  0  0  0  0  4  0  0  4  0  4  0  4
 0  0  0  0  0  0  0  4  4  0  4  0  0  4  4  4  4  0  4  0  0  4  0  4  4  0  4  0  0  0  0  4  4  4  4  4  4  4  0  4  4  0  4  4  4  4  0  0  0  0  0  4  4  0  0  0  4  4  4  4  4  0  4  0  4  4

generates a code of length 66 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+76x^58+48x^59+234x^60+112x^61+435x^62+144x^63+542x^64+208x^65+536x^66+208x^67+532x^68+144x^69+420x^70+112x^71+210x^72+48x^73+57x^74+8x^76+3x^78+7x^80+2x^82+6x^86+1x^90+2x^92

The gray image is a code over GF(2) with n=264, k=12 and d=116.
This code was found by Heurico 1.16 in 1.27 seconds.