class FlyodTriangle 
{
	public static void main(String[] args) 
	{
		int count = 1;
		for(int i = 1 ; i <= 5 ; i++){
			for(int j = 1 ; j <= i ; j++){
				System.out.print(count + " ");
				count++;
			}
			System.out.println();
		}
	}
}