#ifndef ONLINE_JUDGE
#define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll=long long;
using ld=long double;
using st=string;
using P=pair<ll,ll>;
typedef atcoder::modint mint;
ll inf=9e18;
template<typename T, int s, int i = 0>
auto vec(const ll (&sizes)[s], const T& init = T()){
  if constexpr(i < s) return vector(sizes[i], vec<T, s, i+1>(sizes, init));
  else return init;
}


int main(){
  ll n;
  cin>>n;
  auto s=vec<ll>({n*2,n*2},0);
  if(n<=2){cout<<"-1\n";return 0;}
  for(ll i=0;i<n*2;i++){
    for(ll j=0;j<n*2;j++){
      if(i==n*2-1||j==n*2-1) s[i][j]=1;
      if(n*n*2-n*4+1>(n*2-1)*i+j){
        s[i][j]=1;
      }
    }
  }
  for(ll i=0;i<n*2;i++){
    for(ll j=0;j<n*2;j++){
      if(s[i][j]) cout<<"A";
      else cout<<"B";
    }
    cout<<"\n";
  }
}