#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(ll i=a;i<b;i++)
#define rrep(i,a,b) for(ll i=a-1;i>=b;i--)
#define ll long long
#define ull unsigned ll
#define ld long double
#define bl __int128_t
#define fi first
#define se second
#define vel vector<ll>
#define vvel vector<vel>
#define pll pair<ll,ll>
#define vepll vector<pll>
#define vvepll vector<vepll>
#define ves vector<string>
#define vem vector<mint>
#define vvem vector<vem>
#define pmm pair<mint,mint>
#define cleout(i) cout<<fixed<<setprecision(i)
template<class T>using PQ=priority_queue<T,vector<T>,greater<T>>;
//               上  右 下 左
vector<int> di={-1, 0, 1, 0};
vector<int> dj={ 0, 1, 0,-1};

vector<int> dx={ 0, 1, 0,-1};
vector<int> dy={ 1, 0,-1, 0};


vector<int> ddx={ 1, 1, 1, 0, -1, -1, -1, 0 };
vector<int> ddy={ 1, 0, -1, -1, -1, 0, 1, 1 };

ll inf=1000000000000000000;//1e18
// LLONG_MAX

mt19937_64 rng((ull)chrono::steady_clock::now().time_since_epoch().count());

void _solve(){
    ll N;
    cin>>N;
    if(N>2&&(2*N-3)*(2*N-3)+3>=2*N*N){
        vel cnt(2*N);
        ll ok=(2*N-3)*(2*N-3)+3-2*N*N;
        rrep(i,2*N-2,1){
            ll m=max(0ll,min(2*N-4,ok));
            cnt[i]=m;
            ok-=m;
        }
        vvel ans(2*N,vel(2*N));
        rep(i,0,2){
            rep(j,0,2)ans[i][j]=1;
        }
        rep(j,1,2*N-2){
            rep(i,1,2*N-2-cnt[j])ans[i][j]=1;
        }
        rep(i,0,2*N){
            rep(j,0,2*N){
                cout<<(char)('A'+ans[i][j]);
            }
            cout<<"\n";
        }
    }else cout<<"-1\n";
}


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

    
    ll _;
    bool multitest=0;
    if(multitest)cin>>_;
    else _=1;
    rep(__,0,_){
        _solve();
    }
}