The generator matrix

 1  1  1  1  1  1  1  7
 0  7  0  0  7  7 28  7
 0  0  7  0 35 28 21  7
 0  0  0  7 35  7 14 42

generates a code of length 8 over Z49 who´s minimum homogenous weight is 35.

Homogenous weight enumerator: w(x)=1x^0+336x^35+2394x^42+13404x^49+672x^56

The gray image is a code over GF(7) with n=56, k=5 and d=35.
This code was found by Heurico 1.16 in 0.0117 seconds.