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