public static void Main()
Console.WriteLine("Please enter your number");
int num = int.Parse(Console.ReadLine());
while(num > 9 || num <= 0)
Console.WriteLine("Please enter one digitr");
num = Convert.ToInt32(Console.ReadLine());
for(int i =1; i <= 15; i++)
if (i == 5 || i == 9 || i == 12 || i == 14 || i == 15)