/*
* Author: Arpit Bhayani
* https://arpitbhayani.me
*/
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <climits>
#include <deque>
#include <iostream>
#include <list>
#include <limits>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
#define ll long long
#define MIN(a, b) a < b ? a : b
using namespace std;
int main(int argc, char *argv[]) {
int t;
scanf("%d", &t);
char array[5][16] = {"BattleShip", "Cruiser", "Destroyer", "", "Frigate"};
while( t-- ) {
char str[4], ch;
scanf("%s", str);
ch = tolower(str[0]);
printf("%s\n", array[ch-'b']);
}
return 0;
}
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