#include<string>
#include<cstdio>
#include<vector>
#include<cstdlib>
#include<iostream>

using namespace std;

int main (void)
{
	vector<int> rjesenja;

	for(int i = 0; i < 5; i++)
	{
		string temp;
		cin >> temp;
		if(temp.find("FBI") <= temp.length())
			rjesenja.push_back(i + 1);
		
	}
	vector<int>:: iterator i;
	for(i = rjesenja.begin(); i != rjesenja.end(); i++)
		cout << *i << " ";
	if(rjesenja.size() == 0)
		cout << "UTEKO";

	cout << endl;
}