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
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class Program
{
    static void Main(string[] args)
    {
        string[] str = Console.ReadLine().Split(' ');
        int lengtha = str[0].Length;
        int lengthb = str[1].Length;
        string end_a = str[0].Substring(lengtha - 1, 1);
        string start_b = str[1].Substring(0, 1);
        string end_b = str[1].Substring(lengthb - 1, 1);
        string start_c = str[2].Substring(0, 1);

        if(end_a == start_b && end_b == start_c){
            Console.WriteLine("YES");
        }else{
            Console.WriteLine("NO");
        }
    }
}