The generator matrix

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

generates a code of length 36 over Z27 who´s minimum homogenous weight is 72.

Homogenous weight enumerator: w(x)=1x^0+72x^72+8x^81

The gray image is a code over GF(3) with n=324, k=4 and d=216.
This code was found by Heurico 1.16 in 0.00945 seconds.