#include<iostream>
using namespace std;
int main(){
	int n;
	string s;
	cin>>n>>s;
	for(int i=0;i<(int)(n/2.0+0.5);i++){
		for(int j=0;j<n;j++){
			if((i==0||i==(int)(n/2.0+0.5)-1)&&j>0&&j<n-1)cout<<s;
			else if(j>0&&j<n-1)cout<<' ';
			else cout<<s;
		}
		cout<<endl;
	}
    return 0;
}