02. Append Lists

using System;
using System.Collections.Generic;
using System.Linq;

namespace _02._Append_Lists
{
    class AppendedLists
    {
        static void Main(string[] args)
        {
            List<List<string>> outerList = Console.ReadLine()
                .Split('|')
                .Reverse()
                .Select
                (
                s => s.Split(new char[] { ' ' },
                StringSplitOptions.RemoveEmptyEntries).ToList()
                )
                .ToList();

            foreach (var inerList in outerList)
            {
                Console.Write(string.Join(" ", inerList) + " ");
            }
            Console.WriteLine();
        }
    }
}