#include <iostream>
using namespace std;
int main() {
// your code goes here
int n;
cin>>n;
for(int i =1;i<=n;i++){
for(int j=1;j<=n-i;j++){
cout<<" ";
}
for(int j =i;j<=2*(i-1)+1;j++){
cout<<j;
}
for(int j =2*(i-1);j>=i;j--){
cout<<j;
}
cout<<endl;
}
return 0;
}
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