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 stdIn=new Scanner(System.in);
		String a=stdIn.next();
		String b=stdIn.next();
		String c=stdIn.next();
		int a1=a.length();
		int b1=b.length();
		int c1=c.length();
		String e="";
		String f;
		e=a.substring(a1-1,a1);
		f=b.substring(0,1);
		if(e.equals(f)){
			e=b.substring(b1-1,b1);
			f=c.substring(0,1);
			if(e.equals(f))
				System.out.println("YES");
			else
				System.out.println("NO");
		}
		else
			System.out.println("NO");
	}
}
