/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String regex = "^(?=.{3,15}$)[a-zA-Z]+[\\s'.a-zA-Z-]+[a-zA-Z]+$";
		String strings[] = { 
			"f f f f f f f f", 
			"fff fffffffffff", 
			"fff ffffffffffff",
			"f f",
			"f"
 
		};
 
		Pattern pattern = Pattern.compile(regex);
	    for (String s : strings) {
	    	Matcher matcher = pattern.matcher(s);
	    	if (matcher.find()) {
	    		System.out.println("Match: " + s);
	    	} else {
	    		System.out.println("No match: " + s);
	    	}
		}
	}
}

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