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:
Purple Black Pink Orange Orange
Black Pink Black Purple Black
Black Purple Brown Black Green
Black Orange Black Black Black

Output:
Purple Black Pink Pink Pink
Black Pink Black Purple Black
Black Purple Brown Black Green
Black Pink Black Black Black


Example 2
Input:
Pink Black Blue Black Brown
Green Pink Black Blue Black
Purple Gray Black Black Black
Black Black Red Orange Black
Black Pink Black Brown Yellow

Output:
Pink Black Blue Black Purple
Green Pink Black Blue Black
Purple Gray Black Black Black
Black Black Red Orange Black
Black Pink Black Purple Yellow


Example 3
Input:
Black Yellow Red Purple
Black Black Yellow Orange
Red Black Purple Black
Black Gray Black Black
Black Yellow Brown Blue

Output:
Black Yellow Red Brown
Black Black Yellow Orange
Red Black Brown Black
Black Gray Black Black
Black Yellow Brown Blue


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


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