The generator matrix

 1  0  0  1  1  1  1  1  1  6  0  1  3  1  1  6  1  1  1  1  1  0  6  1  6  1  1  0  1  1  0  1  1  1  3  1  1  1  3  1  3  1  6  1  1  6  1  1  1  1  1  1  1  3  3  1  1  1  3  6  1  6  3  1  1  0  1  3  3  6  1  1
 0  1  0  0  3  7  1  8  7  1  1  2  6  3  7  1  5  5  1  1  6  1  1  1  1  3  1  1  0  6  1  2  4  5  0  6  8  0  1  3  1  4  6  8  2  1  3  8  7  5  4  6  4  1  1  1  6  0  1  1  3  1  1  8  4  1  2  1  1  1  4  0
 0  0  1  1  5  2  4  0  6  7  5  6  1  1  5  1  7  2  6  7  0  3  8  7  8  4  6  0  0  8  1  2  8  1  1  8  3  7  5  8  3  2  1  1  3  3  4  7  5  0  3  1  5  0  0  3  2  1  5  5  2  1  4  7  6  4  6  8  8  6  5  5
 0  0  0  6  6  6  6  6  3  6  6  0  6  0  0  3  6  0  0  3  0  3  3  0  0  3  6  6  6  6  3  0  0  6  3  3  0  0  3  0  6  0  3  0  6  6  6  3  6  3  6  0  3  0  3  0  3  3  6  3  6  6  3  0  3  0  6  6  0  6  6  3

generates a code of length 72 over Z9 who´s minimum homogenous weight is 137.

Homogenous weight enumerator: w(x)=1x^0+264x^137+160x^138+384x^140+186x^141+294x^143+164x^144+174x^146+84x^147+84x^149+48x^150+84x^152+38x^153+102x^155+20x^156+36x^158+12x^159+36x^161+4x^162+4x^165+6x^168+2x^174

The gray image is a code over GF(3) with n=216, k=7 and d=137.
This code was found by Heurico 1.13 in 5.33 seconds.