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.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.next();
    String alast = String.valueOf(a.charAt(a.length() - 1));
    String b = sc.next();
    String bfirst = String.valueOf(b.charAt(0));
    String blast = String.valueOf(b.charAt(b.length() - 1));
    String c = sc.next();
    String cfirst = String.valueOf(c.charAt(0));
    String ans = "NO";
    if(alast.equals(bfirst) && blast.equals(cfirst)) ans = "YES";
    System.out.println(ans);
  }
}