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 Red Black Black Black
Red Red Green Purple Purple
Red Red Black Yellow Purple
Pink Brown Black Orange Purple
Pink Pink Pink Orange Black

Output:
Black Red Red Pink Pink
Red Red Red Brown Pink
Black Green Black Black Pink
Black Purple Yellow Orange Orange
Black Purple Purple Purple Black


Example 2
Input:
Black Blue Blue
Gray Gray Yellow
Black Blue Blue

Output:
Black Gray Black
Blue Gray Blue
Blue Yellow Blue


Example 3
Input:
Blue Blue Green
Red Red Blue
Black Red Blue

Output:
Blue Red Black
Blue Red Red
Green Blue Blue


Here is the input grid for the test example:
Input:
Gray Black Black Black
Gray Blue Black Black
Green Orange Orange Green
Green Orange Orange 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:

```
Gray Gray Green Green
Black Blue Orange Orange
Black Black Orange Orange
Black Black Green Black
```
assistant