import java.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;

public class ClubManager {
    public static void main(String[] args) {
        ArrayList<HashSet<String>> clubList = new ArrayList<>();

        // 讀取社團成員資料，用逗號分隔，存入HashSet
        Scanner scanner = new Scanner(System.in);
        for (int i = 0; i < 5; i++) {
            HashSet<String> members = new HashSet<>();
            for (String member : scanner.nextLine().split(",")) {
                members.add(member);
            }
            clubList.add(members);
        }

        // 讀取要退出的學生姓名
        String studentToRemove = scanner.nextLine();

        // 顯示剩餘社團清單的第一個和最後一個社團
        // HashSet以字串形式顯示，成員按字母順序排列
        if (clubList.isEmpty() == false) {
            displaySortedMembers(clubList.get(0));
            displaySortedMembers(clubList.get(clubList.size() - 1));
        }
        else {
            System.out.println("Empty");
        }
    }

    public static void displaySortedMembers(HashSet<String> members) {
        ArrayList<String> sortedMembers = new ArrayList<>(members);
        sortedMembers.sort(null);
        System.out.println(String.join(",", sortedMembers));
    }
}