#include <bits/stdc++.h>
using namespace std;
int main() {
	// 4、循环结构嵌套
	
	//(1) 矩形星阵 
	
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cout << "*";
		}
		cout << endl;
	}
	
	// (2) 直角三角形星阵
	
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= i; j++) {
			cout << "*";
		}
		cout << endl;
	}	 
	
	// (3) 等腰三角形星阵
	
	int n;  
	cin >> n;
	for (int i = 1; i <= n; i++) {
		for (int k = 1; k <= n - i; k++) {
			cout << " ";
		}
		for (int j = 1; j <= 2 * i - 1; j++) {
			cout << "*";
		}
		cout << endl;
	} 
		
	// (4) 倒置等腰三角形星阵
	
	int n;  
	cin >> n;
	for (int i = n; i >= 1; i--) {
		for (int k = 1; k <= n - i; k++) {
			cout << " ";
		}
		for (int j = 1; j <= 2 * i - 1; j++) {
			cout << "*";
		}
		cout << endl;
	} 
	
	// (5) 九九乘法表 
	
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= i; j++) {
			cout << j << "*" << i << "=" << i * j << " ";
		}
		cout << endl;
	}
	
	return 0;
}