#include<bits/stdc++.h>
using namespace std;
int m;

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,c,q,z);
	} 
}
int main(){
	cin>>m;
	f(m,'A','B','C');
	return 0;
}

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