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:
Red Black Black Black Green Green
Red Brown Black Black Green Green
Red Brown Black Black Green Green
Red Brown Orange Orange Pink Blue
Red Brown Orange Orange Pink Black
Brown Brown Black Black Black Black

Output:
Black
Black
Red
Black
Black
Black


Example 2
Input:
Yellow Black Black Black Black
Yellow Black Brown Brown Brown
Yellow Black Brown Brown Brown
Yellow Black Gray Gray Black
Green Green Green Green Black
Green Green Green Green Black

Output:
Black
Black
Yellow
Black


Example 3
Input:
Gray Gray Black Black Black Black Black Red
Gray Gray Black Black Black Black Black Red
Gray Gray Black Black Black Black Black Red
Gray Gray Black Black Black Black Black Red
Gray Gray Black Black Black Black Black Red
Gray Gray Black Black Black Black Black Black
Black Black Black Black Black Black Black Black
Black Black Black Black Black Black Black Black
Black Black Black Black Black Black Black Black
Black Green Green Black Black Black Black Black
Black Black Black Black Black Black Purple Black

Output:
Gray
Black
Black
Black


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


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
Black
Black
Black
```
assistant