// out even 20, 22, .. 40

class CountUpEven_20_40
{
	public static void main(String[] args)
	{
			int count = 20;
			while (count <= 40)
			{
				System.out.print(count+" ");
				count = count + 2;
			}
			System.out.println ("\n\n\n");
	}
}