#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;

int n;
char a[20];
int main()
{
	freopen("rocksa.in","r",stdin);
	freopen("rocksa.out","w",stdout);
	cin>>n;
	for(int i=1;i<n;i++)
	{
		a[i]='O';
		cout<<a[i]<<' ';
	}
	a[n]='O';
	cout<<a[n]<<endl;	
	for(int i=1;i<=n;i++)
	{
		if(a[i]=='O')
			a[i]='X';
			
		for(int k=1;k<n;k++)
			cout<<a[k]<<' ';	
		cout<<a[n]<<endl;
	}
	
	for(int i=1;i<=n;i++)
	{
		if(a[i]=='X')
			a[i]='O';	
			
		for(int j=1;j<n;j++)
			cout<<a[j]<<' ';
		cout<<a[n]<<endl;
	}	
	return 0;
}