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
package main

import(
      "fmt"
)

func main(){
  var a,b,c string
  fmt.Scan(&a,&b,&c)
  if a[len(a)-1]==b[0] {
    if b[len(b)-1]==c[0] {
      fmt.Println("YES")
    }
  }else{
    fmt.Println("NO")
  }
}

//====  ↓↓↓ template functions ↓↓↓  ==============

func min(a, b int) int{
  if a < b {
    return a
  }
  return b
}

func max(a, b int) int{
  if a > b {
    return a
  }
  return b
}

func abs(x int) int{
  if x < 0 {
    return -x
  }
  return x
}