The generator matrix

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

generates a code of length 15 over Z49 who´s minimum homogenous weight is 84.

Homogenous weight enumerator: w(x)=1x^0+180x^84+2058x^90+90x^91+72x^105

The gray image is a code over GF(7) with n=105, k=4 and d=84.
This code was found by Heurico 1.16 in 0.00799 seconds.