The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31 16 48  0  7 36 36 19
 0  0 35  0 35  7 35  7 42 14  7 42  0 28 28 42 28 35
 0  0  0  7 28 28 21 42  0 42  7 42 35 35 28 35  0  7

generates a code of length 18 over Z49 who´s minimum homogenous weight is 91.

Homogenous weight enumerator: w(x)=1x^0+528x^91+1176x^96+3192x^98+4116x^102+14112x^103+10704x^105+24696x^109+42336x^110+16068x^112+588x^119+132x^126

The gray image is a code over GF(7) with n=126, k=6 and d=91.
This code was found by Heurico 1.16 in 1.13 seconds.