The generator matrix

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

generates a code of length 47 over Z3[X]/(X^2) who´s minimum homogenous weight is 90.

Homogenous weight enumerator: w(x)=1x^0+210x^90+330x^93+54x^96+30x^99+66x^102+18x^105+20x^108

The gray image is a linear code over GF(3) with n=141, k=6 and d=90.
This code was found by Heurico 1.16 in 0.0136 seconds.