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:
Purple
Orange
Black
Yellow
Pink
Brown

Output:
Purple Purple
Purple Orange
Orange Black
Yellow Yellow
Yellow Pink
Pink Brown


Example 2
Input:
Black
Orange
Black
Black
Red

Output:
Black Black
Orange Orange
Orange Black
Black Black
Red Red


Example 3
Input:
Orange
Gray
Black
Yellow
Black

Output:
Orange Orange
Orange Gray
Gray Black
Yellow Yellow
Yellow Black


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

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