The generator matrix

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

generates a code of length 48 over Z27 who´s minimum homogenous weight is 90.

Homogenous weight enumerator: w(x)=1x^0+134x^90+108x^93+1674x^96+234x^99+30x^108+4x^117+2x^135

The gray image is a code over GF(3) with n=432, k=7 and d=270.
This code was found by Heurico 1.16 in 0.176 seconds.