Frequency Analysis#4841

Frequency Analysis

3 seconds
64 megabytes
Very easy

Sort all the words in the given text by their frequency of occurrence in ascending order. If two words have the same frequency, sort them in lexicographical order.

Input

The input consists of a text with words separated by spaces and newlines.

Output

Output the sorted list of words, with each word on a new line.

Examples

Example 1

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