#include<bits/stdc++.h>
using namespace std;
void f(int n,char q,char c,char z){
	if(n==1)	cout<<q<<" To "<<z<<endl;
	else{
		f(n-1,q,z,c);
		cout<<q<<" To "<<z<<endl;
		f(n-1,z,q,c);
	}
}
int main(){
	int n;
	cin>>n;
	f(n,'A','B','C');
}
/**************************************************************
	Problem: 1222
	User: linweilun
	Language: C++
	Result: Wrong Answer
****************************************************************/