#include<bits/stdc++.h>
using namespace std;
char a[31][31],b[31][31];
int n;
int fx[4]={0,1,0,-1};
int fy[4]={1,0,-1,0};
void dfs(int x,int y){
	a[x][y]='1';
	for(int i=0;i<=3;i++){
		int tx=x+fx[i];
		int ty=y+fy[i];
		if(tx>=1&&tx<=n&&ty>=1&&ty<=n&&a[tx][ty]!='1'){
			dfs(tx,ty);
		}
	}
}
int main(){
   cin>>n;
   for(int i=1;i<=n;i++){
   	for(int j=1;j<=n;j++){
   		cin>>a[i][j];
   		b[i][j]=a[i][j];
   	}
   }
   dfs(1,1); 
   for(int i=1;i<=n;i++){
   	for(int j=1;j<=n;j++){
   		if(a[i][j]=='0'){
   			cout<<2<<" ";
   			continue;
   		}
   		cout<<b[i][j]<<" ";
   	}
   	cout<<endl;
   }
   return 0;
}

/**************************************************************
	Problem: 1802
	User: chenjingqi
	Language: C++
	Result: Wrong Answer
****************************************************************/