The generator matrix

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

generates a code of length 58 over Z8 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+95x^40+56x^41+248x^42+120x^43+550x^44+356x^45+694x^46+686x^47+988x^48+1108x^49+1402x^50+1598x^51+1846x^52+2536x^53+3118x^54+4186x^55+4596x^56+5694x^57+5683x^58+5632x^59+4588x^60+4410x^61+3170x^62+2680x^63+1769x^64+1478x^65+1353x^66+940x^67+1126x^68+698x^69+785x^70+360x^71+425x^72+168x^73+211x^74+54x^75+74x^76+8x^77+32x^78+6x^80+7x^82+1x^86

The gray image is a code over GF(2) with n=232, k=16 and d=80.
This code was found by Heurico 1.16 in 98.5 seconds.