A conversation between User and Assistant. The user asks a question, and the Assistant solves it. The assistant first thinks about the reasoning process in the mind and then provides the user with the answer.
User: Find the common rule that maps an input grid to an output grid, given the examples below.

Example 1:
Input:  0 0 9 8 5 5 1 1 7 6 4 9 5 2 4 1 2 7 9 4
Output: 0 9 8 5 5 1 1 7 6 4 9 5 2 4 1 2 7 9 4 0

Example 2:
Input:  2 5 9 8 1 2 8 2 7 0 0 0 0 0 0 0 2 6 3 1
Output: 5 9 8 1 2 8 2 7 0 0 0 0 0 0 0 2 6 3 1 2

Example 3:
Input:  8 5 1 9 9 7 1 5 2 8 8 2 9 8 0 0 3 6 5 9
Output: 5 1 9 9 7 1 5 2 8 8 2 9 8 0 0 3 6 5 9 8

Below is a test input grid. Predict the corresponding output grid by applying the rule you found.
Input:
6 3 5 7 2 5 7 7 2 0 0 0 0 0 9 8 3 3 6 7
Show your work in <think> </think> tags, and return the answer in <answer> </answer> tags with space between each number. For example <answer> 1 3 5 7 </answer>.
Assistant: Let me solve this step by step.
<think>
user