#include <iostream>
using namespace std;
typedef long long ll;

ll N;

int main(){
	cin>>N;
	for(int i='b'-'a';i<=N;i++){
		if(i%('d'-'a')=='a'-'a') cout<<"Fizz";
		if(i%('f'-'a')=='a'-'a') cout<<"Bizz";
		if(i%('d'-'a')!='a'-'a'&&i%('f'-'a')!='a'-'a') cout<<i;
		cout<<endl;
	}
}