Hangul Initial Consonants

A name S made only of Hangul syllables is given. Write a program that takes the initial consonant of every syllable of S and prints them in order.

An initial consonant is one of these 19 letters.

ㄱ, ㄲ, ㄴ, ㄷ, ㄸ, ㄹ, ㅁ, ㅂ, ㅃ, ㅅ, ㅆ, ㅇ, ㅈ, ㅉ, ㅊ, ㅋ, ㅌ, ㅍ, ㅎ

For example, if S is 한글날, the initial consonants are ㅎㄱㄴ.

The first line contains a string S made only of Hangul syllables. Every character of S is a precomposed Hangul syllable from U+AC00 (가) to U+D7A3 (힣), and the input is encoded in UTF-8. The length of S is at most 100.

Print all initial consonants of S in order on the first line.