The generator matrix

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

generates a code of length 21 over Z9 who´s minimum homogenous weight is 31.

Homogenous weight enumerator: w(x)=1x^0+24x^31+42x^32+372x^33+204x^34+228x^35+894x^36+510x^37+714x^38+2406x^39+1110x^40+1368x^41+3276x^42+1416x^43+1338x^44+2838x^45+840x^46+636x^47+990x^48+270x^49+48x^50+132x^51+20x^54+6x^57

The gray image is a code over GF(3) with n=63, k=9 and d=31.
This code was found by Heurico 1.16 in 28.9 seconds.