
#include 

using namespace std;

void printStepN(int n, int LineLength)
{
	int maxN = n;
	int p = 0;
	int Ln = 2*LineLength -1;
	for(auto i=0; i= Ln-n && i>=1)p--;
		cout << p%10;
		
	}
	cout << endl;
}



int main() {
	int n;
	cin >> n;
	for(int i=0; i< 2*n-1; i++)
		printStepN(i, n);
}