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

int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(0);
    //start here
    int N;cin >> N;
    N *= 2;
    if(N == 2){
        cout << "-1";
        return 0;
    }
    else if(N == 4){
        cout << "-1";
        return 0;
    }
    
    vector<string> grid(N,string(N,'A'));
    int cnt = N*N/2;
    auto add = [&](int i,int j){
        if(cnt == 0) return;
        if(grid[i][j] == 'B') return;
        if((i == 1 || i == 2) && (j == 2 || j == 4)) return;
        cnt--;
        grid[i][j] = 'B';
    };
    for(int i = 1;i < N-1;i++){
        add(1,i);
        add(i,1);
    }
    for(int i = 1;i < N-1;i++){
        for(int j = 1;j < N-1;j++){
            add(i,j);
        }
    }

    if(N == 6){
        // cout << "-1";
        
        grid = vector<string>{
            "AAAAAA",
            "ABBBBA",
            "ABBBBB",
            "ABBBBB",
            "AABBBB",
            "AAAAAA",
        };
    }
    for(auto &i:grid){
        cout << i << '\n';
    }
}