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:
Blue Black Black Yellow
Black Gray Gray Black
Black Gray Gray Black
Yellow Black Black Green

Output:
Blue Black Black Yellow
Black Black Black Black
Black Black Black Black
Yellow Black Black Green


Example 2
Input:
Blue Black Black Blue
Black Gray Gray Black
Black Gray Gray Black
Green Black Black Blue

Output:
Blue Black Black Blue
Black Blue Blue Black
Black Blue Blue Black
Green Black Black Blue


Example 3
Input:
Red Black Black Red
Black Gray Gray Black
Black Gray Gray Black
Blue Black Black Blue

Output:
Red Black Black Red
Black Black Black Black
Black Black Black Black
Blue Black Black Blue


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


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:

```
Green Black Black Green
Black Red Red Black
Black Red Red Black
Red Black Black Red
```
assistant