public static void Main()
for(int i = 0; i <= 20; i++){
Console.WriteLine("decrementing");
for(int i = 20; i >= 1; i--){
for(int i = 0; i < 10; i++){
for(int j = 1; j <= 10; j++){
Console.WriteLine(i + " * " + j + " = " + (i * j));
Console.WriteLine("----------------------");