#include<bits/stdc++.h>
using namespace std;
int main()
{
	char a[1002][1002];
	int b[1002][1002]={0},n;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(a[i][j]=="*"){
				b[i][j]++;
				b[i-1][j-1]++;
				b[i-1][j]++;
				b[i-1][j+1]++;
				b[i][j-1]++;
				b[i][j+1]++;
				b[i+1][j-1]++;
				b[i+1][j]++;
				b[i+1][j+1]++;
			} 
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(a[i][j]=="*") cout<<"*";
			else cout<<b[i][j];
		}
		cout<<endl;
	} 
	return 0;