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;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            var word = Console.ReadLine().Split(' ');

            int LenA = word[0].Length;  // Aの文字数
            int LenB = word[1].Length;  // Bの文字数

            //char Ae = word[0].ToCharArray()[LenA - 1];  // Aの最後の文字
            //char Bs = word[1].ToCharArray()[0];         // Bの最初の文字
            //char Be = word[1].ToCharArray()[LenB -1];   // Bの最後の文字
            //char Cs = word[2].ToCharArray()[0];         // Cの最初の文字

            string Ae = word[0].Substring(LenA - 2, 1);
            string Bs = word[1].Substring(0, 1);
            string Be = word[1].Substring(LenB - 2, 1);
            string Cs = word[2].Substring(0, 1);

            if (Ae==Bs && Be==Cs) 
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
        }
    }
}
