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

generates a code of length 33 over Z49 who´s minimum homogenous weight is 168.

Homogenous weight enumerator: w(x)=1x^0+510x^168+1284x^175+1680x^182+2184x^189+2916x^196+100842x^198+3174x^203+2808x^210+1596x^217+582x^224+72x^231

The gray image is a code over GF(7) with n=231, k=6 and d=168.
This code was found by Heurico 1.16 in 6.34 seconds.