The generator matrix

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

generates a code of length 54 over Z8 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+111x^48+226x^49+422x^50+356x^51+467x^52+386x^53+441x^54+362x^55+381x^56+234x^57+254x^58+106x^59+169x^60+70x^61+28x^62+38x^63+23x^64+12x^65+4x^66+2x^67+3x^70

The gray image is a code over GF(2) with n=216, k=12 and d=96.
This code was found by Heurico 1.16 in 0.526 seconds.