The generator matrix

 1  1  1  1  1  1  1  1  3  3  1
 0  3 24  0 21  9  0  9 21 24 24
 0  0  9  0  9  0  9 18  9  0  9
 0  0  0  9 18 18 18 18  9  0  0

generates a code of length 11 over Z27 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+180x^18+324x^20+180x^21+486x^22+648x^23+306x^24+62x^27

The gray image is a code over GF(3) with n=99, k=7 and d=54.
This code was found by Heurico 1.16 in 0.004 seconds.