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 Pink Orange Purple

Output:
Yellow Pink Orange Purple
Black Black Black Black


Example 2
Input:
Yellow Orange Pink

Output:
Yellow Orange Pink
Black Black Black


Example 3
Input:
Brown Gray Orange

Output:
Brown Gray Orange
Black Black Black


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

```
Pink Green Gray Pink Gray
Black Black Black Black Black
```
assistant