#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,i,j;
	char a;
	cin>>n>>a;
	if(a=='x'){
		for(i=1;i<=n;i++){
			for(j=1;j<=n-i;j++){
				cout<<" ";
			} 
			for(j=1;j<=i*2-1;j++){
				cout<<"*";
			} 
			cout<<endl;
		} 
		for(i=n;i>=1;i--){
			for(j=1;j<=n-i;j++){
				cout<<" ";
			} 
			for(j=1;j<=i*2-1;j++){
				cout<<"*";
			} 
			cout<<endl;
		} 
	}else if(a=='y'){
		for(i=1;i<=n;i++){
			for(j=1;j<=n-i;j++){
				cout<<" ";
			} 
			for(j=1;j<=i*2-1;j++){
				cout<<"*";
			}
			for(j=1;j<=(n-i)*2;j++){
				cout<<" ";
			} 
			for(j=1;j<=i*2-1;j++){
				cout<<"*";
			} 
			cout<<endl;
		} 
	}
	return 0;
}
/**************************************************************
	Problem: 1353
	User: zzz
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/