using System;

class CrossProductOfTwoStrings
{
    static void Main()
    {
        string input = Console.ReadLine();
        while (input.Length > 0)
        {
            string output = string.Empty;
            string[] words = input.Split(' ');
            for (int i = 0; i < words[0].Length; i++)
            {
                for (int j = 0; j < words[1].Length; j++)
                {
                    output += string.Format("{0}{1} ", words[0][i], words[1][j]);
                }
            }
            Console.WriteLine(output.Remove(output.Length - 1));
            input = Console.ReadLine();
        }
    }
}