import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String str = " Door 51 text1 Door 61 text2 Door 10 text3";
        Pattern pattern = Pattern.compile("\\bDoor\\s+\\d+(.*?)(?=\\bDoor\\s+\\d+|$)");
        Matcher matcher = pattern.matcher(str);
        while (matcher.find()) {
            System.out.println(matcher.group(1));
        }
	}
}

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