The generator matrix

 1  0  1  1  1  1  1 21  1  1  1  1
 0  1  7 26 21  4 20  1 19 16  4 16
 0  0  9  0  0  9  9 18 18  9  0 18
 0  0  0  9  0 18  0 18  9  9  9  9
 0  0  0  0 18  9  9  9  9  0  9  9

generates a code of length 12 over Z27 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+168x^18+324x^20+468x^21+3402x^22+1296x^23+5238x^24+6804x^25+1296x^26+560x^27+126x^30

The gray image is a code over GF(3) with n=108, k=9 and d=54.
This code was found by Heurico 1.16 in 0.113 seconds.