#include<bits/stdc++.h>
using namespace std;
int n,s;
void ss(int n,char q,char c,char z){
	if(n==1) cout<<q<<" To "<<z<<endl;
	else{
		ss(n-1,q,z,c);
		cout<<q<<" To "<<z<<endl;
		ss(n-1,c,q,z);
	}
}
int main(){ 
	cin>>n;
	ss(n,'A','B','C');
return 0;}

/**************************************************************
	Problem: 1222
	User: fzy001
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/