using System;

namespace FiveDifferentNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int m = int.Parse(Console.ReadLine());
            int number = 0;
            int counter = 0;
            for (int row = n; row < m; row++)
            {
                for (number = n; number < m; number++)
                {
                    if (number == m - 1 && counter >= 5)
                    {

                        Console.Write($"{number + 1} ");

                    }
                    else
                    {
                        Console.Write($"{number} ");

                    }
                counter++;
                }
                Console.WriteLine();
            }
        }
    }
}