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:
Black Black Black Black
Black Black Black Black
Black Black Blue Red
Black Black Purple Green

Output:
Gray Pink Gray Pink
Brown Yellow Brown Yellow
Gray Pink Gray Pink
Brown Yellow Brown Yellow


Example 2
Input:
Black Black Black Black
Black Black Black Black
Black Black Red Blue
Black Black Green Purple

Output:
Pink Gray Pink Gray
Yellow Brown Yellow Brown
Pink Gray Pink Gray
Yellow Brown Yellow Brown


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

Output:
Pink Brown Pink Brown
Yellow Gray Yellow Gray
Pink Brown Pink Brown
Yellow Gray Yellow Gray


Here is the input grid for the test example:
Input:
Black Black Black Black
Black Black Black Black
Black Black Green Purple
Black Black Blue Red


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:

```
Yellow Brown Yellow Brown
Gray Pink Gray Pink
Yellow Brown Yellow Brown
Gray Pink Gray Pink
```
assistant