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

#define rep(i,n) for (int i=0; i<(n); ++i)
#define nall(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define Yes cout << "Yes" << endl
#define No cout << "No" << endl

template<typename T,typename U>inline bool chmax(T&a,U b){if(a<b){a=b;return 1;}return 0;}
template<typename T,typename U>inline bool chmin(T&a,U b){if(a>b){a=b;return 1;}return 0;}

using ll = long long;
using ull = unsigned long long;
using P = pair<ll,ll>;

const int inf = (1e9);
const ll INF = (1e18)+(1e9);
const ll dx[] = {0,1,0,-1,1,1,-1,-1};
const ll dy[] = {1,0,-1,0,1,-1,1,-1};

//#include <atcoder/all>
//using namespace atcoder;

//using mint = modint998244353;

int testcase(){
    ll n,k; cin >> n >> k;
    P s,t;
    cin >> s.first >> s.second;
    cin >> t.first >> t.second;
    s.first--;s.second--;
    t.first--;t.second--;
    ll cnt = abs(s.first-t.first)+abs(s.second-t.second);
    if(k<cnt || k>cnt*2 || (k-cnt)%2){
        cout << -1 << endl;
        return 0;
    } 
    vector<vector<ll>> board(n,vector<ll>(n));
    rep(i,n){
        rep(j,n){
            if((i+j)%2) board[i][j] = 1;
        }
    }

    ll base = board[s.first][s.second];
    board[t.first][t.second] = base;

    P now = s;
    ll rem = cnt*2-k;
    while(rem){
        if(abs(now.first-t.first)){
            now.first -= (now.first-t.first)/abs(now.first-t.first);
            if(board[now.first][now.second]!=base){
                board[now.first][now.second] = base;
            }
            rem--;
        }
        else{
            now.second -= (now.second-t.second)/abs(now.second-t.second);
            if(board[now.first][now.second]!=base){
                board[now.first][now.second] = base;
            }
            rem--;
        }
    }
    rep(i,n){
        rep(j,n){
            if(board[i][j]==base) cout << '.';
            else cout << '#';
        }
        cout << endl;
    }
    return 0;
}

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

    //int t=1;
    //cin >> t;
    //while(t--)
    testcase();

    return 0;
}