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
#include <stdio.h>
#include <string.h>

int main () {
	char a [10];
	char b[10];
	char c[10];
	scanf ("%s %s %s",&a,&b,&c);
		int len1 = strlen(a);
	int len2 = strlen(b);
	int len3 = strlen(c);
	if (a>='a' && a<='z' && b>='a' &&b<='z' &&c>='a' &&c<='z' ) {
	
	if (a[len1-1] == b[0] && b[len2-1] == c[0]) {
		printf("YES");
	}
	else printf ("NO");}
	else printf ("NO");
	
	return 0;
}