#include <bits/stdc++.h>
using namespace std;
void hanNuo(int n,char a,char b,char c){
    if(n > 0){
        hanNuo(n - 1,a,c,b);
        cout<<a<<" To "<<c<<endl;
        hanNuo(n - 1,b,a,c);        
    }
}
  
int main(){
    int n;
    cin>>n;
    hanNuo(n,'A','B','C');
}
/**************************************************************
	Problem: 1222
	User: huxuanchen
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/