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>
  char f[100],c[100],r[100];
int main()
{
  int i,j,k,l1,l2,l3;
  scanf("%s",f);
  scanf("%s",c);
  scanf("%s",r);
  l1=strlen(f);
  l2=strlen(c);
  l3=strlen(r);
  if (f[l1-1]==c[0])j=1;
  if (c[l2-1]==r[0])k=1;
  if (j==1&&k==1)printf("YES");
  else if(j==1&&k!=1)printf("NO");
    else if(j!=1&&k==1)printf("NO");
  else printf("NO");
  return 0;
}
