#include<bits/stdc++.h>
using namespace std;
void s(int n,char a,char b,char c){
    if(n==1){
        cout<<a<<" To "<<c<<endl;
    }else{
        s(n-1,a,c,b);
        cout<<a<<" To "<<c<<endl;
        s(n-1,b,a,c);
    }
}
int main(){
    int n;
    cin>>n;
    s(n,'A','B','C');
    return 0;
}
 
/**************************************************************
	Problem: 1222
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/