You are given three strings A, B and C. Check whether they form a word chain.

More formally, determine whether both of the following are true:

* The last character in A and the initial character in B are the same.
* The last character in B and the initial character in C are the same.



If both are true, print `YES`. Otherwise, print `NO`.

Constraints

* A, B and C are all composed of lowercase English letters (`a` - `z`).
* 1 ≤ |A|, |B|, |C| ≤ 10, where |A|, |B| and |C| are the lengths of A, B and C, respectively.

Input

Input is given from Standard Input in the following format:


A B C


Output

Print `YES` or `NO`.

Examples

Input

rng gorilla apple


Output

YES


Input

yakiniku unagi sushi


Output

NO


Input

a a a


Output

YES


Input

aaaaaaaaab aaaaaaaaaa aaaaaaaaab


Output

NO
<?php
fscanf(STDIN, "%d %d %d", $a, $b, $c);
// $a = 'abc';
// $b = 'cdf';
// $c = 'fgh';
$arrayFirst = str_split($a);
$arraySecond = str_split($b);
$arrayThird = str_split($c);
if($arrayFirst[count($arrayFirst) - 1] === $arraySecond[0]){
  if($arraySecond[count($arraySecond) -1] === $arrayThird[0]){
    echo 'YES';
  }else{
    echo 'NO';
  }
}else{
  echo 'NO';
}
?>