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 Pink Gray Pink
Gray Pink Blue Brown
Gray Brown Pink Green
Gray Pink Gray Gray

Output:
Black Black Black Black
Black Black Black Black
Black Black Black Black
Gray Gray Gray Gray


Example 2
Input:
Brown Brown Brown Red
Yellow Pink Yellow Purple
Pink Yellow Purple Pink
Brown Pink Green Pink

Output:
Brown Brown Brown Brown
Black Black Black Black
Black Black Black Black
Black Black Black Black


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

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


Here is the input grid for the test example:
Input:
Gray Yellow Pink Brown
Brown Gray Gray Brown
Pink Brown Pink Pink
Orange Gray Orange 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 Black Black
Black Black Black Black
Pink Pink Pink Pink
Black Black Black Black
```
assistant