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 Blue Blue Black
Black Blue Blue Black
Black Black Gray Gray
Black Black Gray Gray

Output:
Blue Gray Blue Gray
Gray Blue Gray Blue
Blue Gray Blue Gray
Gray Blue Gray Blue


Example 2
Input:
Black Black Gray Gray
Black Black Gray Gray
Black Red Red Black
Black Red Red Black

Output:
Gray Red Gray Red
Red Gray Red Gray
Gray Red Gray Red
Red Gray Red Gray


Example 3
Input:
Black Yellow Yellow Black
Black Yellow Yellow Black
Green Green Black Black
Green Green Black Black

Output:
Yellow Green Yellow Green
Green Yellow Green Yellow
Yellow Green Yellow Green
Green Yellow Green Yellow


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


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:

```
Orange Brown Orange Brown
Brown Orange Brown Orange
Orange Brown Orange Brown
Brown Orange Brown Orange
```
assistant