#include using namespace std;
int main() { char l; cin >> l; int n = (int)(l - 'A'); for (int i = 0; i <= n; i++) { for (int j = 0; j < i; j++) { cout << " "; } for (int j = n - i ; j >= 0; j--) { cout << (char)('A' + j ); } for (int j = 0; j < n - i; j++) { cout << (char)('A' + j ); } cout << endl; } return 0;
}