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:
Blue Blue Black Yellow
Blue Black Black Blue
Blue Blue Black Blue
Red Blue Black Black

Output:
Brown Blue Black Yellow
Blue Black Black Blue
Blue Blue Black Blue
Red Blue Black Black


Example 2
Input:
Blue Blue Blue Yellow
Black Black Black Blue
Black Blue Blue Blue
Red Black Black Blue

Output:
Brown Blue Blue Yellow
Black Black Black Blue
Black Blue Blue Blue
Red Black Black Blue


Example 3
Input:
Blue Blue Blue Yellow
Blue Black Blue Blue
Black Blue Black Black
Red Black Black Blue

Output:
Brown Blue Blue Yellow
Blue Black Blue Blue
Black Blue Black Black
Red Black Black Blue


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

```
Brown Blue Black Yellow
Blue Black Blue Black
Blue Black Black Blue
Red Black Blue Blue
```
assistant