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.io.PrintWriter;
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		PrintWriter out = new PrintWriter(System.out);
		//String S = sc.next();
		//int N = Integer.parseInt(sc.next());
		//out.println();
		// ArrayList<String> list = new ArrayList<String>();
		// list.stream().sorted().distinct();
		String A =sc.next();
		String B =sc.next();
		String C =sc.next();
		if(A.charAt(A.length())==B.charAt(0) &&
		B.charAt(B.length())==C.charAt(0)){
			out.println("YES");
		}else{
			out.println("NO");
		}

		out.flush();	
	}
}