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 Purple Brown
Blue Blue Blue Brown
Black Green Green Black
Black Green Blue Black

Output:
Black Black Black Black Black Black
Black Black Black Black Black Black
Black Black Blue Blue Black Black
Black Black Blue Blue Black Black
Black Black Black Black Black Black
Black Black Black Black Black Black


Example 2
Input:
Brown Brown Blue Blue
Brown Brown Blue Blue
Purple Brown Blue Blue
Purple Brown Blue Blue

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


Example 3
Input:
Green Blue Blue Blue
Blue Blue Blue Blue
Blue Blue Brown Pink
Blue Blue Brown Pink

Output:
Black Black Black Black Black Black
Black Black Black Black Black Black
Black Black Green Blue Black Black
Black Black Blue Blue Black Black
Black Black Black Black Black Black
Black Black Black Black Black Black


Here is the input grid for the test example:
Input:
Blue Blue Black Black
Blue Blue Black Black
Black Purple Purple Black
Black Purple Purple 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 Black Black Black Black
Black Black Black Black Black Black
Black Black Blue Blue Black Black
Black Black Blue Blue Black Black
Black Black Black Black Black Black
Black Black Black Black Black Black
```
assistant