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:
Orange Blue Black Yellow
Black Orange Black Black
Black Black Brown Black
Yellow Black Pink Brown

Output:
Yellow Black Black Orange
Black Black Orange Blue
Pink Brown Black Black
Brown Black Black Yellow


Example 2
Input:
Orange Black Green Black
Brown Brown Purple Pink
Pink Purple Black Black
Black Green Red Black

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


Example 3
Input:
Black Brown Gray Black
Black Yellow Green Purple
Blue Pink Gray Black
Black Black Red Black

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


Here is the input grid for the test example:
Input:
Purple Yellow Black Pink
Black Black Orange Black
Black Blue Black Gray
Black Gray 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:

```
Black Black Black Purple
Gray Blue Black Yellow
Black Black Orange Black
Black Gray Black Pink
```
assistant