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
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		String[] str = in.nextLine().split(" ",0);
		String[] st1 = str[0].split("",0);
		String[] st2 = str[1].split("",0);
		String[] st3 = str[2].split("",0);

		int s1Len = st1.length-1;
		int s2Len = st2.length-1;

		if(st1[s1Len].equals(st2[1]) && st2[s2Len].equals(st3[1])){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}

	}

}