validUsername

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class validUsername {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        String[] usernames = input.nextLine().split("[ \\\\()\\/]+");

        String pattern = "^[A-Za-z][A-Za-z0-9_]{2,25}$";
        Pattern regEx = Pattern.compile(pattern);
        List<String> validUsers = new ArrayList<String>();
        for (int i = 0; i < usernames.length; i++) {
            Matcher userMatch = regEx.matcher(usernames[i]);
                if(userMatch.find()){
                    validUsers.add(usernames[i]);
                }
        }
        int longest = Integer.MIN_VALUE;
        String user1 = "";
        String user2 = "";
        for (int i = 0; i <validUsers.size()-1 ; i++) {
            int sum = validUsers.get(i).length() + validUsers.get(i+1).length();
            if(sum > longest){
                longest = sum;
                user1 = validUsers.get(i);
                user2 = validUsers.get(i+1);
            }
        }
        System.out.println(user1);
        System.out.println(user2);
    }
}