/**
	author:  shobonvip
	created: 2026.09.19 17:00:48
**/

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

//* ATCODER
#include<atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
//*/

/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/

typedef long long ll;

#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)
#define all(v) v.begin(), v.end()

template <typename T> bool chmin(T &a, const T &b) {
	if (a <= b) return false;
	a = b;
	return true;
}

template <typename T> bool chmax(T &a, const T &b) {
	if (a >= b) return false;
	a = b;
	return true;
}

template <typename T> T max(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
	return ret;
}

template <typename T> T min(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
	return ret;
}

template <typename T> T sum(vector<T> &a){
	T ret = 0;
	for (int i=0; i<(int)a.size(); i++) ret += a[i];
	return ret;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	
	int n,k;
	cin >> n >> k;
	int sr,sc,tr,tc;
	cin >> sr>>sc>>tr>>tc;
	sr--;sc--;tr--;tc--;
	int must = abs(sr-tr)+abs(sc-tc);
	if (k < must) {
		cout<<-1<<'\n';return 0;
	} 
	if (k%2!=must%2) {
		cout<<-1<<'\n';return 0;
	}
	bool mode=0;
	if (! (sr>=tr && sc>=tc)) {
		swap(sr,tr);
		swap(sc,tc);
	}
	if (! (sr>=tr && sc>=tc)) {
		mode = 1;
		sr = n-1-sr;
		tr = n-1-tr;
	}
	if (! (sr>=tr && sc>=tc)) {
		swap(sr,tr);
		swap(sc,tc);
	}
	vector<vector<char>>ans(n,vector<char>(n,'.'));
	rep(i,tr+tc+1,sr+sc) {
		if(i%2!=(tr+tc+1)%2)continue;
		if (must<k) {
			must+=2;
			rep(x,0,i+1){
				int y = i-x;
				if (x>=0&&y>=0&&x<n&&y<n) {
					ans[x][y]='#';
				}
			}
		}
	}

	//cout << sr << ' ' << sc << ' ' << tr << ' ' << tc << endl;
	//cout << k << ' ' << must << endl;
	if (must!=k) {
		cout <<-1 << '\n';
		return 0;
	}

	if (mode) {
		vector<vector<char>>nans(n,vector<char>(n,'.'));
		rep(i,0,n){
			rep(j,0,n){
				nans[i][j]=ans[n-1-i][j];
			}
		}
		swap(ans,nans);
	}

	rep(i,0,n){
		rep(j,0,n){
			cout<<ans[i][j];
		}
		cout<<'\n';
	}
}