using System;

public class Program

{

    public static void Main()

    {

        string str1="outer";

        string str2="innner";

        char[] str1char=str1.ToCharArray();

        char[] str2char = str2.ToCharArray();

        int i=0;

        while(i<=str1char.Length)

        Console.WriteLine(str1char[i]+""+str2char[i]);

        i++;

        }

   }