The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  3  1  1  1  3
 0  3  0  0  0  0  0  0  0  0  0  0  3  6  3  6  3  3  3
 0  0  3  0  0  0  0  0  0  0  3  3  6  0  3  0  3  3  0
 0  0  0  3  0  0  0  0  0  0  6  3  6  3  0  6  3  3  6
 0  0  0  0  3  0  0  0  0  3  6  0  6  0  0  3  6  6  3
 0  0  0  0  0  3  0  0  0  6  6  0  6  3  3  6  0  6  6
 0  0  0  0  0  0  3  0  0  6  6  3  6  6  6  0  6  0  6
 0  0  0  0  0  0  0  3  0  6  6  6  0  6  6  6  0  3  6
 0  0  0  0  0  0  0  0  3  6  0  3  3  0  6  3  6  3  6

generates a code of length 19 over Z9 who´s minimum homogenous weight is 21.

Homogenous weight enumerator: w(x)=1x^0+134x^21+420x^24+794x^27+1454x^30+2598x^33+4374x^34+3594x^36+17496x^37+3822x^39+17496x^40+3210x^42+2088x^45+1066x^48+414x^51+84x^54+4x^57

The gray image is a code over GF(3) with n=57, k=10 and d=21.
This code was found by Heurico 1.16 in 6.75 seconds.