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
const main = (input) => {
  input = input.split(' ');
  const A = input[0];
  const B = input[1];
  const C = input[2];
  
  const resultA = A.slice(0,-1);
  const resultB = B.slice(0,1);
  const resultb = B.slice(0,-1);
  const resultC = C.slice(0,1);
  
  if (resultA==resultB && resultb==resultC) {
    console.log('YES');
  }else{
    console.log('NO');
  }
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));