The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  7  1  1  1  1  1  1  1 21  1  1  1  1  1  1  1 14
 0  1 36 31 16 48  4 19  7 29 38  9  6 46 26  1 21 43  3 23 20 11 40  1 14 15 45 44 13 32 33  1

generates a code of length 32 over Z49 who´s minimum homogenous weight is 189.

Homogenous weight enumerator: w(x)=1x^0+1344x^189+1056x^196

The gray image is a code over GF(7) with n=224, k=4 and d=189.
This code was found by Heurico 1.16 in 0.00367 seconds.