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 scanner = new Scanner(System.in);
		    
		    String a = scanner.next();
		    String b = scanner.next();
		    String c = scanner.next();
		    
		    
		    if(a.substring(a.length()-1).equals(b.substring(0, 1)) 
		    		&&
		    	b.substring(b.length()-1).equals(c.substring(0, 1))) 
		    {
		    	System.out.println("YES");
		    }
		    else
		    {
		    	System.out.println("NO");
		    }	
		    
		    scanner.close(); }
		  }