#include <stdio.h>
#include <iostream>

using namespace std;

int main() {

	int a[5];
	int kari;
	char d;
	
	while (cin >> a[0] >> d >> a[1] >> d >> a[2] >> d >> a[3] >> d >> a[4]) {
		for (int i = 4; i > 0; i--) {
			for (int j = 0; j < i; j++) {
				if (a[j] > a[j+1]) {
					kari = a[j];
					a[j] = a[j+1];
					a[j+1] = kari;
				}
			}
		}
		if (a[0] == a[1] || a[1] == a[2] || a[2] == a[3] || a[3] == a[4]) {
			if ((a[0] == a[1] && a[1] == a[2]) || (a[1] == a[2] && a[2] == a[3]) || (a[2] == a[3] && a[3] == a[4])) {
				if (((a[0] == a[1] && a[1] == a[2]) && (a[3] == a[4])) || ((a[0] == a[1]) && (a[2] == a[3] && a[3] == a[4]))) {
					cout << "full house" << endl;
				} else if ((a[0] == a[1] && a[1] == a[2] && a[3]) || (a[1] == a[2] && a[2] == a[3] && a[3] == a[4])){
					cout << "four card" << endl;
				}else {
					cout << "three card" << endl;
				}
			} else if ((a[0] == a[1] && a[2] == a[3]) || (a[0] == a[1] && a[3] == a[4]) || (a[1] == a[2] && a[3] == a[4])) {
				if ((a[0] == a[1] && a[1] == a[2] && a[2] == a[3]) || (a[1] == a[2] && a[2] == a[3] && a[3] == a[4])) {
					cout << "four cards" << endl;
				} else {
					cout << "two pair" << endl;
				}
			} else {
				cout << "one pair" << endl;
			}
		} else if ((a[1] == a[0] + 1 && a[2] == a[1] + 1 && a[3] == a[2] + 1 && a[4] == a[3] + 1) || (a[0]  == 1 && a[1] == 10 && a[2] == a[1] + 1 && a[3] == a[2] + 1 && a[4] == a[3] + 1)){
			cout << "straight" << endl;
		} else {
			cout << "null" << endl;
		}
	}
	return 0;
}