#include<bits/stdc++.h>
using namespace std;
void hnt(int s,char q,char c,char z){
	if(s==1) cout<<q<<" To "<<z<<endl;
	else{
		hnt(s-1,q,z,c);
		cout<<q<<" To "<<z<<endl;
		hnt(s-1,c,q,z);
	}
}
int main(){
	int n;
	cin>>n;
	hnt(n,'A','B','C');
	return 0;
}
/**************************************************************
	Problem: 1222
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/