#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

#define rep(i,n) for(ll i=0;i<n;++i)
#define all(a) (a).begin(),(a).end()
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll modpow(ll a, ll b, ll p){ ll ans = 1; while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }
template<class T> T div_floor(T a, T b) { return a / b - ((a ^ b) < 0 && a % b); }
template<class T> T div_ceil(T a, T b) { return a / b + ((a ^ b) > 0 && a % b); }
template <typename T, typename U> inline bool chmin(T &x, U y) { return (y < x) ? (x = y, true) : false; }
template <typename T, typename U> inline bool chmax(T &x, U y) { return (x < y) ? (x = y, true) : false; }

template<typename T,typename U>
ostream &operator<<(ostream &os,const pair<T,U> &p){
    return os<<p.first<<' '<<p.second;
}

template<typename T>
ostream &operator<<(ostream &os, const vector<T> &a){
    if (a.empty()) return os;
    os << a.front();
    for (auto e : a | views::drop(1)){
        os << ' ' << e;
    }
    return os;
}

void dump(auto ...vs){
    ((cout << vs << ' '), ...) << endl;
}



void solve() {
    ll N;
    cin>>N;
    if (N<=2){
        cout<<-1<<'\n';
        return;
    }
    vector<string> A(2*N,string(2*N,'A'));
    if (N==3){
        A={
            "ABBBAA",
            "ABBBBA",
            "ABBBBA",
            "ABBBBA",
            "ABBBAA",
            "AAAAAA"
        };
        rep(i,2*N){
            cout<<A[i]<<'\n';
        }
        return;
    }
    if (N==4){
        A={
            "ABBBAAAA",
            "ABBBBBBA",
            "ABBBBBBA",
            "ABBBBBBA",
            "ABBBBBBA",
            "ABBBBAAA",
            "ABAAAAAA",
            "AAAAAAAA"
        };
        rep(i,2*N){
            cout<<A[i]<<'\n';
        }
        return;
    }
    rep(i,2)rep(j,2)A[i][j]='B';
    ll cnt=4;
    for (ll i=2;i<2*N-2;i++){
        A[1][i]='B';
        A[i][1]='B';
        cnt++;
        cnt++;
    }
    for (ll i=2;i<2*N-2;i++){
        if (cnt>=2*N*N)break;
        for (ll j=2;j<2*N-2;j++){
            if (cnt>=2*N*N)break;
            A[i][j]='B';
            cnt++;
        }
    }
    rep(i,2*N){
        cout<<A[i]<<'\n';
    }
    return;
}


int main() {
    cin.tie(0)->sync_with_stdio(0);
    ll T=1;
    while (T--){
        solve();
    }
    return 0;
}