/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String Str = "  I am testing     a   "; 
 
		String[] words = Str.split("( |[^a-zA-Z0-9'])+");
 
		for(int i=0; i<words.length; i++)
		{
		    if(words[i].length() != 0) 
		    {
                System.out.println(words[i]);
		    }
		}
	}
}

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