Three Letter Words

Limits 1s, 512 MB

Given a line of text find all the three-letter words.

Input

A line of text containing upper and lowercase alphabets and spaces. The line will contain at most 1000 characters.

Output

The output should contain all three letter words, as they appear in the original text, one per line.

Sample

InputOutput
The quick brown fox jumps over the lazy dog
The
fox
the
dog