#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
 #define int long long

#define all(X) (X).begin(), (X).end()
#define reset(X) memset(X, 0, sizeof(X))
#define mp(a, b) make_pair(a, b)
#define pb push_back
#define endl '\n'
#define fi first
#define se second


using namespace __gnu_pbds;
using namespace std;
const int mod=1e9+7;
 // const int mod=998244353;
 // const int mod=1e9+9;
const int INF=4e18+10;
 //const int INF=1e9+10;
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T>
using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define read(n) int n; cin>>n;
#define readv(x, n) vector<int> x(n); for(auto &i:x) cin>>i;


typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef pair<int, int> pii;

template<typename T1,typename T2>
void set_min(T1& a, T2 b)
{
    a=min(a, (T1)b);
}


int multiply(int a, int b, int in_mod){return (a*b)%in_mod;}
int mult_identity(int a){return 1;}


auto power(auto a, int b, int in_mod)
{
    auto prod=mult_identity(a);
    auto mult=a%in_mod;
    while(b!=0)
    {
        if(b%2)
        {
            prod=multiply(prod,mult, in_mod);

        }
        mult=multiply(mult, mult,in_mod);
        b/=2;
    }
    return prod;
}
int mod_inv(int q, int in_mod)
{

    return power(q, in_mod-2,in_mod);
}




void precomp()
{
}
void solve()
{
    int h, w;
    cin>>h>>w;
    vector<vector<char>> bad(h, vector<char>(w));
    for(int i=0;i<h;i++)
        for(int j= 0;j<w;j++)
            cin>>bad[i][j];

    vector<vector<char>> red(h, vector<char>(w, '.'));
    vector<vector<char>> blue(h, vector<char>(w, '.'));

    for(int i= 0;i<h;i++)
        for(int j=0;j<w;j++)
            if(j==0|| (i%2 && j!=w-1))
                red[i][j] = '#';

    for(int i= 0;i<h;i++)
        for(int j=0;j<w;j++)
            if(!(j==0|| (i%2 && j!=w-1)))
                blue[i][j] = '#';


    for(int i= 0;i<h;i++)
        for(int j=0;j<w;j++)
            if(bad[i][j] == '#')
                red[i][j] = '#', blue[i][j] ='#';


    for(int i= 0;i<h;i++)
    {
        for(int j=0;j<w;j++)
            cout<<red[i][j];
        cout<<endl;
    }
    for(int i= 0;i<h;i++)
    {
        for(int j=0;j<w;j++)
            cout<<blue[i][j];
        cout<<endl;
    }



}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cerr.tie(NULL);
#ifndef ONLINE_JUDGE
    if (fopen("INPUT.txt", "r"))
    {
        freopen("INPUT.txt", "r", stdin);
        freopen("OUTPUT.txt", "w", stdout);
    }
#endif
    auto clk = clock();
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    // -------------------------------------Code starts here---------------------------------------------------------------------



    precomp();
    int t = 1;
 //   cin>>t;

    for (int test = 1; test <= t; test++)
    {
        // cout<<"Case #"<<test<<": ";
        //cout<<"Trip #"<<test<<": ";
        // cout<<endl;
         solve();
        // solveB();

        // cout<<endl;
    }

    // -------------------------------------Code ends here------------------------------------------------------------------

    clk = clock() - clk;
    // cerr << fixed << setprecision(6) << "Time: " << ((long double)clk) / CLOCKS_PER_SEC << "\n";
    return 0;
}



Measured memory_bytes: 4356