Description

Link

To prepare for the English exam Little Ho collected many digital reading materials. Unfortunately the materials are messed up by a malware.

It is known that the original text contains only English letters (a-zA-Z), spaces, commas, periods and newlines, conforming to the following format:

1. Each sentence contains at least one word, begins with a letter and ends with a period.

2. In a sentence the only capitalized letter is the first letter.

3. In a sentence the words are separated by a single space or a comma and a space.

4. The sentences are separated by a single space or a single newline.

It is also known the malware changes the text in the following ways:

1. Changing the cases of letters.

2. Adding spaces between words and punctuations.

Given the messed text, can you help Little Ho restore the original text?

Input

Output

Sample Input

my Name  is Little   Hi.
His   name IS Little ho  ,  We are   friends.

Sample Output

My name is little hi.
His name is little ho, we are friends.

2. Analysis

3. Solution(s)

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while True:
    try:
        data = [x.lower() for x in raw_input().split()]
        data[0] = data[0][0].upper() + data[0][1:]
        
        result = ""
        for i in data:
            if i == "," or i == ".":
                result = result[:-1] + i + " "
            else:
                result += (i + " ")
        print result
    except:
        break