#include<iostream>
#include<iostream>
using namespace std;
int n,s,a[101];
int main()
{
	cin>>n>>s;
	for(int i=1;i<=n;i++)
	{
		a[i]=s%10;
		if(s>9)s=(s-a[i])/10;
		else break;
	}
	for(int i=n;i>=1;i--)
	{
		if(a[i]==0)cout<<"XXX";
		if(a[i]==1)cout<<"..X";
		if(a[i]==2)cout<<"XXX";
		if(a[i]==3)cout<<"XXX";
		if(a[i]==4)cout<<"X.X";
		if(a[i]==5)cout<<"XXX";
		if(a[i]==6)cout<<"XXX";
		if(a[i]==7)cout<<"XXX";
		if(a[i]==8)cout<<"XXX";
		if(a[i]==9)cout<<"XXX";
		if(i!=1)cout<<".";
	}
	cout<<endl;
	for(int i=n;i>=1;i--)
	{
		if(a[i]==0)cout<<"X.X";
		if(a[i]==1)cout<<"..X";
		if(a[i]==2)cout<<"..X";
		if(a[i]==3)cout<<"..X";
		if(a[i]==4)cout<<"X.X";
		if(a[i]==5)cout<<"X..";
		if(a[i]==6)cout<<"X..";
		if(a[i]==7)cout<<"..X";
		if(a[i]==8)cout<<"X.X";
		if(a[i]==9)cout<<"X.X";
		if(i!=1)cout<<".";
	}
	cout<<endl;
	for(int i=n;i>=1;i--)
	{
		if(a[i]==0)cout<<"X.X";
		if(a[i]==1)cout<<"..X";
		if(a[i]==2)cout<<"XXX";
		if(a[i]==3)cout<<"XXX";
		if(a[i]==4)cout<<"XXX";
		if(a[i]==5)cout<<"XXX";
		if(a[i]==6)cout<<"XXX";
		if(a[i]==7)cout<<"..X";
		if(a[i]==8)cout<<"XXX";
		if(a[i]==9)cout<<"XXX";
		if(i!=1)cout<<".";
	}
	cout<<endl;
	for(int i=n;i>=1;i--)
	{
		if(a[i]==0)cout<<"X.X";
		if(a[i]==1)cout<<"..X";
		if(a[i]==2)cout<<"X..";
		if(a[i]==3)cout<<"..X";
		if(a[i]==4)cout<<"..X";
		if(a[i]==5)cout<<"..X";
		if(a[i]==6)cout<<"X.X";
		if(a[i]==7)cout<<"..X";
		if(a[i]==8)cout<<"X.X";
		if(a[i]==9)cout<<"..X";
		if(i!=1)cout<<".";
	}
	cout<<endl;
	for(int i=n;i>=1;i--)
	{
		if(a[i]==0)cout<<"XXX";
		if(a[i]==1)cout<<"..X";
		if(a[i]==2)cout<<"XXX";
		if(a[i]==3)cout<<"XXX";
		if(a[i]==4)cout<<"..X";
		if(a[i]==5)cout<<"XXX";
		if(a[i]==6)cout<<"XXX";
		if(a[i]==7)cout<<"..X";
		if(a[i]==8)cout<<"XXX";
		if(a[i]==9)cout<<"XXX";
		if(i!=1)cout<<".";
	}
    return 0;
}