The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  3  1  3  1  3  1  1  3  3  3  3  3  9  1  1
 0  9  0  0  9  0  9  9  0  9  0  9  0  9  0  9  0  9  9 18  9 18  9 18 18 18  9 18 18 18  9 18 18
 0  0  9  0 18  9 18  9  0  9  9  0 18 18 18  9 18  0 18  0 18  9  9  0  9  0  9  0  9 18  0  0  9
 0  0  0  9 18 18  0 18 18  0  9 18  0  9  9  9 18  9 18  0  9 18  9  9  0  9  0  0  0  9  9 18 18

generates a code of length 33 over Z27 who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+138x^63+162x^64+18x^66+324x^67+18x^69+66x^72+2x^81

The gray image is a code over GF(3) with n=297, k=6 and d=189.
This code was found by Heurico 1.16 in 0.44 seconds.