#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,k,sx,sy,tx,ty;
  cin>>n>>k>>sx>>sy>>tx>>ty;
  ll u=abs(sx-tx)+abs(sy-ty);
  if(k<u||k>2*u){
    cout<<-1<<"\n";
    return 0;
  }
  u=k-u;
  if(u%2!=0){
    cout<<-1<<"\n";
    return 0;
  }
  auto ans=vec<st>({n},"");
  for(ll i=1;i<=n;i++){
    for(ll j=1;j<=n;j++){
      ll b=abs(sx-i)+abs(sy-j);
      if(b<=u){
        if(b%2==0) ans[i-1].push_back('.');
        else ans[i-1].push_back('#');
      }
      else ans[i-1].push_back('.');
    }
  }
  for(auto i:ans){
    cout<<i<<"\n";
  }
}