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:
Brown Gray Purple Black
Green Green Green Green
Black Black Black Green
Black Black Black Green

Output:
Purple Purple Purple Purple
Black Black Black Gray
Black Black Black Brown


Example 2
Input:
Pink Blue Black Black
Blue Blue Blue Black
Pink Pink Blue Pink
Pink Black Pink Black
Pink Black Black Black

Output:
Black Black Black Black
Black Black Black Black
Blue Black Blue Black
Pink Black Black Black


Example 3
Input:
Brown Pink
Green Black
Green Black
Green Black
Green Green

Output:
Pink Black
Brown Black
Pink Black
Brown Brown


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


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 Gray Black
Black Brown Black
Purple Purple Purple
Gray Gray Gray
```
assistant