The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  0 35 21 42 36 30 31  1 16 38  4 34 18 48 29 23 17 47 25 40 10
 0  0  1 36 31 16  5 18  7 25 34 10 47  9  8 48 13 14 32 15 38  4 22

generates a code of length 23 over Z49 who´s minimum homogenous weight is 126.

Homogenous weight enumerator: w(x)=1x^0+294x^126+2142x^127+5292x^128+2940x^129+588x^132+3150x^133+10710x^134+14112x^135+4410x^136+8232x^138+3528x^139+9174x^140+22134x^141+23814x^142+7056x^143+36x^147+12x^154+24x^161

The gray image is a code over GF(7) with n=161, k=6 and d=126.
This code was found by Heurico 1.16 in 1.17 seconds.