Even shelf numbers

Problem

A warehouse keeps stock on n shelves numbered 1 to n, and only the even-numbered shelves are in use today. Print the even shelf numbers in order, one per line.

Input, output and limits

Input: One integer n.
Output: The even numbers from 2 up to n, one per line.
Constraints: 2 ≤ n ≤ 100

Examples

Example

Input

Output

2
4
6

The even numbers up to 7 are 2, 4 and 6.

Hints

Try the problem first. Open one hint at a time.

Hint 1

Start the counter at 2 and move it forward in steps.

Hint 2

range can take a third value that is the step.

Write your Python code, run it on the examples and submit it to hidden tests.

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