The generator matrix

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

generates a code of length 48 over Z8 who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+83x^42+176x^43+455x^44+416x^45+334x^46+508x^47+417x^48+404x^49+284x^50+328x^51+297x^52+136x^53+110x^54+76x^55+41x^56+4x^57+17x^58+4x^60+4x^62+1x^64

The gray image is a code over GF(2) with n=192, k=12 and d=84.
This code was found by Heurico 1.16 in 0.42 seconds.