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 Brown Brown
Brown Purple Brown
Brown Brown Brown

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


Example 2
Input:
Red Red Red Red
Green Orange Orange Green
Green Purple Purple Green
Orange Yellow Yellow Orange

Output:
Black Black Black Black Black Black
Black Orange Green Green Red Black
Black Yellow Purple Orange Red Black
Black Yellow Purple Orange Red Black
Black Orange Green Green Red Black
Black Black Black Black Black Black


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

Output:
Black Black Black Black Black Black
Black Red Red Pink Pink Black
Black Pink Orange Gray Gray Black
Black Pink Red Green Purple Black
Black Orange Purple Blue Purple Black
Black Black Black Black Black Black


Here is the input grid for the test example:
Input:
Blue Blue
Blue 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:

```
Black Black Black Black
Black Blue Blue Black
Black Blue Blue Black
Black Black Black Black
```
assistant