java07

import java.io.*;
import java.util.*;
public class Cards {

    public static void main(String[] args) throws IOException {
        /**Inputs are 4C for Four of Clubs. Jack is 11, Queen is 12, King is 13, Ace is 14*/
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        Set<Integer> numberSet = new HashSet<Integer>();
        Set<String> suitSet = new HashSet<String>();
        boolean flush = false;
        int[] count = {0,0,0,0,0,0,0,0,0,0,0,0,0};
        for(int i = 0; i<5; i++) {
            char[] token = st.nextToken().toCharArray();
            count[Character.getNumericValue(token[0])-1] += 1;
            numberSet.add(Character.getNumericValue(token[0]));
            suitSet.add(Character.toString(token[1]));
            }
        Arrays.sort(count);
        if (suitSet.size() == 1) {
            flush = true;
            System.out.print("flush");
        }
        if (numberSet.size() == 2) {
            if (count[12]==4)
                System.out.println("four-of-a-kind");
            else
                System.out.println("full house");
        }
        if (numberSet.size() == 3) {
            if (count[12]==3)
                System.out.println("three-of-a-kind");
            else
                System.out.println("two pairs");
        }

    }
}