The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  2  2  1  2  1  1  2  2  1  1  1  1  1  1  1
 0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  0  0  4  4  4  0  4  4  4  0  0  4  4  4  4  4  0  0  0  4  4  4  0  4  0  0  0
 0  0  4  0  0  0  0  0  0  0  0  0  4  0  0  4  4  4  4  4  4  0  0  0  0  0  4  4  4  4  4  4  4  0  0  0  4  4  4  4  0  0  4  4  4  0  4  0
 0  0  0  4  0  0  0  0  0  0  0  0  4  4  4  4  4  0  4  4  4  0  4  4  4  0  4  0  0  4  4  0  0  0  4  4  4  4  0  0  0  4  4  4  0  0  4  0
 0  0  0  0  4  0  0  0  0  0  0  4  0  4  4  0  4  4  4  0  4  4  4  0  0  0  0  0  4  0  0  4  4  4  0  4  4  0  4  0  0  0  0  4  0  0  0  0
 0  0  0  0  0  4  0  0  0  0  0  4  0  0  4  4  4  4  4  0  0  4  0  0  4  4  0  0  0  4  4  0  4  0  4  0  4  4  4  0  4  0  4  0  4  4  4  0
 0  0  0  0  0  0  4  0  0  0  4  0  0  0  4  4  0  0  4  0  0  4  4  0  4  0  4  0  4  0  4  0  4  4  4  4  0  4  0  4  0  4  4  0  4  4  0  0
 0  0  0  0  0  0  0  4  0  0  4  0  0  4  0  0  4  0  0  4  0  4  4  0  0  4  4  4  0  0  4  4  0  4  4  0  4  4  0  0  0  4  0  4  0  0  0  0
 0  0  0  0  0  0  0  0  4  0  4  4  4  4  0  0  0  0  4  0  0  0  4  4  4  4  0  0  0  4  0  4  4  4  0  4  4  4  4  0  4  4  0  0  0  4  0  0
 0  0  0  0  0  0  0  0  0  4  4  4  4  0  0  4  4  4  4  4  0  4  0  4  0  4  0  4  4  0  0  4  0  4  4  4  4  0  4  4  0  0  4  0  0  4  4  4

generates a code of length 48 over Z8 who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+30x^36+75x^38+84x^40+8x^41+100x^42+56x^43+95x^44+168x^45+78x^46+280x^47+2144x^48+280x^49+104x^50+168x^51+100x^52+56x^53+87x^54+8x^55+65x^56+50x^58+31x^60+16x^62+9x^64+1x^66+1x^72+1x^82

The gray image is a code over GF(2) with n=192, k=12 and d=72.
This code was found by Heurico 1.16 in 0.88 seconds.