The generator matrix

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

generates a code of length 21 over Z3[X]/(X^2) who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+390x^30+438x^31+600x^32+2312x^33+1728x^34+2274x^35+8120x^36+4944x^37+6144x^38+20774x^39+9684x^40+11964x^41+32132x^42+11946x^43+12144x^44+25028x^45+8124x^46+5250x^47+8528x^48+2244x^49+990x^50+1088x^51+258x^52+34x^54+8x^57

The gray image is a linear code over GF(3) with n=63, k=11 and d=30.
This code was found by Heurico 1.16 in 94.5 seconds.