The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+38x^58+98x^59+146x^60+234x^61+299x^62+382x^63+367x^64+330x^65+391x^66+404x^67+378x^68+298x^69+248x^70+162x^71+97x^72+74x^73+38x^74+32x^75+23x^76+20x^77+8x^78+8x^79+11x^80+4x^81+2x^83+1x^84+1x^86+1x^90

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 0.821 seconds.