#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int a[5];
	char t;
	while(cin >> a[0] >> t >> a[1] >> t >> a[2] >> t >> a[3] >> t >> a[4]){
		sort(a,a+5);
		if(a[0] == a[3] || a[1] == a[4]){
			cout << "four card" << endl;
		}
		else if((a[0] == a[1] && a[2] == a[4]) || (a[0] == a[2] && a[3] == a[4])){
			cout << "full house" << endl;
		}
		else if((a[0]+1==a[1]&&a[1]+1==a[2]&&a[2]+1==a[3]&&a[3]+1==a[4]) || (a[0]==1&&a[1]==10&&a[2]==11&&a[3]==12&&a[4]==13)){
			cout << "straight" << endl;
		}
		else if(a[0] == a[2] || a[1] == a[3] || a[2] == a[4]){
			cout << "three card" << endl;
		}
		else if((a[0]==a[1]&&(a[2]==a[3]||a[3]==a[4]))||(a[1]==a[2]&&a[3]==a[4])){
			cout << "two pair" << endl;
		}
		else if((a[0]==a[1])||(a[1]==a[2])||(a[2]==a[3])||(a[3]==a[4])){
			cout << "one pair" << endl;
		}
		else{
			cout << "null" << endl;
		}
	}
}