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;
using System.Threading.Tasks;
using System.IO;

namespace VirtualAtCorder
{
    class Program
    {



        static void Main(string[] args)
        {
            string[] inputs = Console.ReadLine().Split(' ');

            bool calc = false;

            string output = "";

            if (inputs[0].Last() == inputs[1].First())
            {
                calc = true;
            }
            if(inputs[1].Last() == inputs[2].First())
            {
                calc = true;
            }
            else
            {
                calc = false;
            }

            output = (calc) ? "YES" : "NO";

            Console.WriteLine(output);

            Console.ReadKey();
        }

    }
}
