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.

Examples

Input

CODEFESTIVAL

Output

CODE FESTIVAL

Input

POSTGRADUATE

Output

POST GRADUATE

Input

ABCDEFGHIJKL

Output

ABCD EFGHIJKL

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