/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Stairs s = new Stairs(5, 10);
		
		for (int i = 0; i <= 20; ++i) {
			System.out.println(s.next());
		}
	}
}

class Stairs {
	private int min;
	private int max;
	private int diff;
	private int value;

	public Stairs(int min, int max) {
		this.min = min;
		this.max = max;
		this.diff = max - min;
		this.value = diff - 1;
	}
	
	public int next() {
		value = (value + 1) % (2 * diff);
		return min + Math.abs(value - diff);
	}
}