#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define pii pair<int,int>
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define pb push_back
#define ll long long
const int N= 105;
int n,m;
string s[N];
char a[N][N];
signed main(){
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
// if(fopen("TASK.INP", "r")){
// freopen("TASK.INP", "r", stdin);
// freopen("TASK.OUT", "w", stdout);
// }
cin>>n>>m;
for(int i=1;i<=n;i++) {
cin>>s[i];
s[i]= ' '+s[i];
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++) a[i][j] = '.';
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(s[i][j]=='#'){
a[i][j]= a[i+1][j] = a[i][j+1] = a[i+1][j+1]='#';
}
}
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++) cout<<a[i][j];
cout<<"\n";
}
}
