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.*;
// cin=sc.nextInt();
// List<Integer> a = new ArrayList<Integer>(n);
 
public class Main {
    public static void main(String args[]){
		    Scanner sc = new Scanner(System.in);	
			String a = sc.next();
			String b = sc.next();
			String c = sc.next();
			int d = a.length();
			int e = b.length();
			if(a[d-1] == b[0] && b[e-1] == c[0]){
				System.out.println("Yes");
			}
			else{
				System.out.println("No");
			}
	}
}