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

int Result(int cards[5]){
	int num_card[13];
	bool four=false, three=false, two=false;
	int	num_two=0;
	int min = 12,max = 0;

	for(int i=0;i<13;++i)num_card[i]=0;

	for(int i=0;i<5;++i){
		num_card[ cards[i] - 1 ] ++;
	}



	for(int i=0;i<13;++i){

		if(num_card[i]>0){
			if(i<min)min=i;
			if(i>max)max=i;

			if(num_card[i]==4)four=true;
			else if(num_card[i]==3)three=true;
			else if(num_card[i]==2){
				two=true;
				++num_two;
			}
		}
	}

	if(four)return 7;
	else if(three){
		if(two)return 6;
		else return 4;
	}
	else if(two){
		if(num_two == 2)return 3;
		else return 2;
	}

	if(max-min+1 == 5)
		return 5;

	return 1;
}

void toint(string s, int cards[5]){

	int m=0;


	for(int i=0;i<5;++i){
		int n=0;

		if(s[m]==',' || s[m]=='\0'){
			cards[i] = n;
			++m;
			continue;
		}

		n += n*10 + s[m]-'0';
		++m;
		--n;
	}
}

int main(){

	string s, res;
	int card[5] = {1,2,3,4,5};
	

	cin >> s;

	toint(s,card);

	switch Result(card){
		case 1:res="null";break;
		case 2:res="one pair";break;
		case 3:res="two pair";break;
		case 4:res="three card";break;
		case 5:res="straight";break;
		case 6:res="full house";break;
		case 7:res="four card";break;
	}

	

	return 0;
}