include

using namespace std;
int main() {
int n,m,j;
while (cin>>n) {
for (int i = 1; i <= 2n-1; i++)
{
if (i <= n) {
m = n - i;
j = 2 * i - 1;
while (m) {
cout << " ";
m--;
}
while (j) {
cout << "";
j--;
}
cout << endl;
}
else {
m = i - n;
j = (2n-1) - 2 * (i - n);
while (m) {
cout << " ";
m--;
}
while (j) {
cout << "";
j--;
}
cout << endl;
}
}
}
return 0;
}