Score : 100 points

Problem Statement

This contest is CODE FESTIVAL. However, Mr. Takahashi always writes it CODEFESTIVAL, omitting the single space between CODE and FESTIVAL.

So he has decided to make a program that puts the single space he omitted.

You are given a string s with 12 letters. Output the string putting a single space between the first 4 letters and last 8 letters in the string s.

Constraints

  • s contains exactly 12 letters.
  • All letters in s are uppercase English letters.

Input

The input is given from Standard Input in the following format:

s

Output

Print the string putting a single space between the first 4 letters and last 8 letters in the string s. Put a line break at the end.

Sample Input 1

CODEFESTIVAL

Sample Output 1

CODE FESTIVAL

Putting a single space between the first 4 letters and last 8 letters in CODEFESTIVAL makes it CODE FESTIVAL.

Sample Input 2

POSTGRADUATE

Sample Output 2

POST GRADUATE

Sample Input 3

ABCDEFGHIJKL

Sample Output 3

ABCD EFGHIJKL