#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,c,q,z);
    }
}
int main(){
    int n;
    cin>>n;
    f(n,'A','B','C');
}
/**************************************************************
	Problem: 1222
	User: lijinkai
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/