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

int a[5];

string poker(int p, int q, int r, int s, int t)
{
	if (p == q && q == r && r == s)
	{
		return "four card";
	}
	if (s == t && q == r && r == s)
	{
		return "four card";
	}
	if (p == q && q == r && s == t)
	{
		return "full house";
	}
	if (p == q && r == s && s == t)
	{
		return "full house";
	}
	if (p == q - 1 && q == r - 1 && r == s - 1 && s == t - 1)
	{
		return "straight";
	}
	if (p == 1 && q == 10 && r == 11 && s == 12 && t == 13)
	{
		return "straight";
	}
	if (p == q && q == r)
	{
		return "three card";
	}
	if (r == s && q == r)
	{
		return "three card";
	}
	if (r == s && s == t)
	{
		return "three card";
	}
	if (p == q && r == s)
	{
		return "two pair";
	}
	if (p == q && s == t)
	{
		return "two pair";
	}
	if (q == r && s == t)
	{
		return "two pair";
	}
	if (p == q)
	{
		return "one pair";
	}
	if (q == r)
	{
		return "one pair";
	}
	if (r == s)
	{
		return "one pair";
	}
	if (s == t)
	{
		return "one pair";
	}
	return "null";
}

int main() {
	while (scanf("%d,%d,%d,%d,%d", &a[0], &a[1], &a[2], &a[3], &a[4]))
	{
		sort(a, a + 5);
		cout << poker(a[0], a[1], a[2], a[3], a[4]) << endl;
	}
}