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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    for(int d=1; d<=25; d++){
        int pos = 0;
        for(int i=0; i<26; i++){
            int to = (pos+d)%26;
            if(d == 1) cout << (char)(pos+'A') << (char)(pos+'A') << "\n";
            cout << (char)(pos+'A') << (char)(to+'A') << "\n";
            pos = to;
        }
    }
}