list operations

using System;
using System.Linq;
using System.Collections.Generic;
using System.Numerics;
using System.Text;

namespace exampreparation
{
    class exam
    {
        static void Main(string[] args)
        {
            List<string> list = Console.ReadLine().Split().ToList();

            List<string> input = Console.ReadLine().Split().ToList();

            while (input[0] != "End")
            {
                if (input.Count == 2)
                {
                    if (input[0] == "Add")
                    {
                        list.Add(input[1]);
                    }
                    else
                    {
                        int indexRemove = int.Parse(input[1]);

                        if (indexRemove >= list.Count || indexRemove < 0)
                        {
                            Console.WriteLine("Invalid index");
                        }
                        else
                        {
                            list.RemoveAt(indexRemove);
                        }
                    }
                }
                else
                {
                    if (input[0] == "Insert")
                    {
                        int indexInsert = int.Parse(input[2]);

                        if (indexInsert >= list.Count || indexInsert < 0)
                        {
                            Console.WriteLine("Invalid index");
                        }
                        else
                        {
                            list.Insert(indexInsert, input[1]);
                        }
                    }
                    else if (input[1] == "left")
                    {
                        int times = int.Parse(input[2]);

                        for (int i = 0; i < times; i++)
                        {
                            string temp = list[0];
                            list.Remove(list[0]);
                            list.Add(temp);
                        }
                    }
                    else
                    {
                        int times = int.Parse(input[2]);

                        list.Reverse();

                        for (int i = 0; i < times; i++)
                        {
                            string temp = list[0];
                            list.Remove(list[0]);
                            list.Add(temp);
                        }

                        list.Reverse();
                    }
                }

                input = Console.ReadLine().Split().ToList();
            }

            Console.WriteLine(string.Join(" ", list));
        }
    }
}