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 sc = new Scanner(System.in);
		char[] hajime = new char[3];
		char[] owari = new char[3];

		for(int i=0; i<3; i++) {
			String str = sc.next();
			hajime[i] = str.charAt(0);
			owari[i] = str.charAt(str.length() -1);
		}
		
		if(owari[0] == hajime[1] && owari[1] == hajime[2]) {
			System.out.print("YES");
		}else {
			System.out.print("NO");
		}

	}
}