#include <bits/stdc++.h>
using namespace std;

int main() {
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			if (j == 1 || j == n)
				cout << "|";
			else if (i == n / 2 + 1)
				cout << "-";
			else
				cout << "a";
		}
		puts("");
	}
	return 0;
}