#include<iostream>
using namespace std;
int main(){
long long a;
cin>>a;
for(long long i=1;i<=a+1;i++){
for(long j=1;j<=i;j++){
cout<<"* ";
}
cout<<endl;
}
for(long long i=a;i>=1;i--){
for(long long j=1;j<=i;j++){
cout<<"* ";
}
cout<<endl;
}
return 0;
}
