import java.util.LinkedList;
import java.util.Scanner;
class draugas{
	String Name;
	String phoneNumber;
	String email;
	String skype;

	draugas (String Name, String phoneNumber, String email, String skype){
		this.Name = Name;
		this.phoneNumber = phoneNumber;
		this.email = email;
		this.skype = skype;
			}

	void setStudentas (String a, String b, String c, String d){
		Name = a;
		phoneNumber = b;
		email = c;
		skype = d;
			}

		String getName(){
			return Name;
			}

		String getphoneNumber(){
			return phoneNumber;
			}

		String getemail(){
			return email;
			}

		String getskype(){
			return skype;
			}

	static LinkedList<draugas> raskDr(LinkedList<draugas> list, String value, char parametras){
	LinkedList<draugas> tempList = new LinkedList<draugas>();
	for (int i = 0; i<	list.size(); i++){
		if (parametras == 'v'){
			if (list.get(i).getName().equals(value)){
				tempList.add(list.get(i));
				}
		}
		else if (parametras == 't'){
			if (list.get(i).getphoneNumber().equals(value)){
				tempList.add(list.get(i));
				}
		}
		else if (parametras == 'e'){
			if (list.get(i).getemail().equals(value)){
				tempList.add(list.get(i));
				}
		}
		else if (parametras == 's'){
			if (list.get(i).getskype().equals(value)){
				tempList.add(list.get(i));
				}
		}
		}
	return tempList;
	}
	public static void main (String[] args){
	LinkedList<draugas> list = new LinkedList<draugas>();
	list.add(new draugas("Tadas", "+370441584", "Tadas@email.com", "TadasV"));
	list.add(new draugas("Jonas", "+370441584", "Jonas@email.com", "JonasM"));
	list.add(new draugas("Mantas", "+370441584", "Mantas@email.com", "MantasR"));
	Value f = new Value();
	String draugas = f.getValue("Iveskite Varda,Tel.nr,E.pasta,skype(atskirkite tarpu)");
	String[] tempInfo = draugas.split(" ");
	list.add(new draugas(tempInfo[0],tempInfo[1],tempInfo[2],tempInfo[3]));
		while (true){

            Scanner sc=new Scanner(System.in);
            String command=sc.nextLine();
            if (command.compareTo("0")==0) break;
            sc=new Scanner(command).useDelimiter(" ");
			char parametras = sc.next().charAt(0);
            String value=sc.next();
            raskDr(list, value, parametras);
        }
		System.out.println(gettempList());
	}

}