The generator matrix

 1  0  0  0  1  1  1 2X  1  1  1  1  1 2X  1  1  1  1  1  1  0  1  1  0 2X  1  0  1  1  1
 0  1  0  0  0  1 2X+1  1  0  X 2X+2 2X+2 X+2  X  2 X+1  X  1 X+1  1  1 2X  1  1  1 2X  X  2  X 2X+1
 0  0  1  0  1  1 2X+2 2X+1 X+1 2X+2 2X X+1  0  1  2 2X  0  X 2X+2 X+1 2X+1  2  1 2X+2  1 2X+2 2X 2X  X  X
 0  0  0  1  2  0 2X+2 2X+2 2X+1 2X X+1 2X  2 X+1  0 2X+1 X+2 2X 2X+1 X+2 2X+1 2X+2 X+1  0 2X+2 X+1  1  X 2X  0
 0  0  0  0 2X  0 2X 2X  X  0  X  0 2X  X 2X 2X  X 2X  0  X  0  X 2X 2X  X  0  0 2X  0  X
 0  0  0  0  0  X  X  0 2X 2X 2X  0  X  X  X  X  0  0  X  X  X 2X 2X 2X  0 2X 2X 2X  X 2X

generates a code of length 30 over Z3[X]/(X^2) who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+484x^48+2872x^51+6198x^54+11068x^57+15604x^60+13726x^63+7234x^66+1654x^69+184x^72+6x^75+12x^78+6x^81

The gray image is a linear code over GF(3) with n=90, k=10 and d=48.
This code was found by Heurico 1.16 in 17.5 seconds.