#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;
}