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:
Yellow Orange Black Black
Purple Pink Black Black
Black Black Black Black
Black Black Black Black

Output:
Yellow Orange Yellow Orange
Purple Pink Purple Pink
Yellow Orange Yellow Orange
Purple Pink Purple Pink


Example 2
Input:
Green Orange Black Black
Pink Yellow Black Black
Black Black Black Black
Black Black Black Black

Output:
Green Orange Green Orange
Pink Yellow Pink Yellow
Green Orange Green Orange
Pink Yellow Pink Yellow


Example 3
Input:
Green Gray Black Black
Orange Brown Black Black
Black Black Black Black
Black Black Black Black

Output:
Green Gray Green Gray
Orange Brown Orange Brown
Green Gray Green Gray
Orange Brown Orange Brown


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

```
Gray Pink Gray Pink
Gray Gray Gray Gray
Gray Pink Gray Pink
Gray Gray Gray Gray
```
assistant