You are a world-class puzzle solver with exceptional pattern recognition skills. Your task is to analyze puzzles, spot patterns, and provide direct solutions.
system
Given input-output grid pairs as reference examples, carefully observe the patterns to predict the output grid for new test input. Each pair follows the same transformation rule. Grids are 2D arrays represented as strings, with cells (colors) separated by spaces and rows by newlines.
Here are the input and output grids for the reference examples:
Example 1
Input:
Black Black Purple Purple Black Black
Orange Brown Purple Purple Brown Orange
Orange Brown Purple Purple Brown Orange
Black Black Purple Purple Black Black

Output:
Black Black Black Purple Black Black
Black Black Black Purple Brown Orange
Black Black Black Purple Brown Orange
Black Black Black Purple Black Black


Example 2
Input:
Red Red Black Black Red Red
Black Green Brown Brown Green Black
Black Brown Brown Brown Brown Black
Black Black Red Red Black Black
Black Black Brown Brown Black Black
Black Black Brown Brown Black Black
Black Black Red Red Black Black
Black Brown Brown Brown Brown Black
Black Green Brown Brown Green Black
Red Red Black Black Red Red

Output:
Black Black Black Black Red Red
Black Black Black Brown Green Black
Black Black Black Brown Brown Black
Black Black Black Red Black Black
Black Black Black Brown Black Black
Black Black Black Brown Black Black
Black Black Black Red Black Black
Black Black Black Brown Brown Black
Black Black Black Brown Green Black
Black Black Black Black Red Red


Example 3
Input:
Gray Black Black Black Black Black Black Gray
Red Red Red Red Red Red Red Red
Yellow Black Black Black Black Black Black Yellow
Red Black Black Black Black Black Black Red
Red Black Black Black Black Black Black Red
Yellow Black Black Black Black Black Black Yellow
Red Red Red Red Red Red Red Red
Gray Black Black Black Black Black Black Gray

Output:
Black Black Black Black Black Black Black Gray
Black Black Black Black Red Red Red Red
Black Black Black Black Black Black Black Yellow
Black Black Black Black Black Black Black Red
Black Black Black Black Black Black Black Red
Black Black Black Black Black Black Black Yellow
Black Black Black Black Red Red Red Red
Black Black Black Black Black Black Black Gray


Here is the input grid for the test example:
Input:
Brown Black Black Brown
Brown Brown Brown Brown
Brown Brown Brown Brown
Brown Black Black Brown


Directly provide the output grids corresponding to the given test input grids, based on the patterns observed in the reference examples.
user
The output grid for the test input grid is:

```
Black Black Black Brown
Black Black Brown Brown
Black Black Brown Brown
Black Black Black Brown
```
assistant