#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll mod=1e9+7;
const ll inf=1e17;
const ll N=1e2+90;
ll n,r;
bool m[N][N];
char a[N][N];
signed main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
memset(m,false,sizeof(m));
cin>>n>>r;
for (ll i=1;i<=n;i++) {
for (ll j=1;j<=r;j++) {
cin>>a[i][j];
if (a[i][j]=='#') m[i][j]=true;
}
}
for (ll i=1;i<=n;i++) {
for (ll j=1;j<=r;j++) {
if (a[i][j]=='#') {
m[i][j+1]=m[i+1][j]=m[i+1][j+1]=true;
}
}
}
for (ll i=1;i<=n;i++) {
for (ll j=1;j<=r;j++) {
cout<<(m[i][j] ? "#" : ".");
}
cout<<endl;
}
return 0;
}
