The generator matrix

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

generates a code of length 20 over Z3[X]/(X^2) who´s minimum homogenous weight is 33.

Homogenous weight enumerator: w(x)=1x^0+170x^33+366x^36+660x^39+620x^42+306x^45+42x^48+20x^51+2x^54

The gray image is a linear code over GF(3) with n=60, k=7 and d=33.
This code was found by Heurico 1.16 in 0.0186 seconds.