String Manipulator - Group 1_03.August.2019

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

namespace String_Manipulator___Group_1_03.August._2019
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            string command = "";

            while ((command = Console.ReadLine()) != "End")
            {
                string[] splittedC = command.Split(" ");
                string newCom = splittedC[0];

                if (newCom == "Translate")
                {
                    string oldChar = splittedC[1];
                    string newChar = splittedC[2];

                    input = input.Replace(oldChar, newChar);
                    Console.WriteLine(input);
                }
                else if (newCom == "Includes")
                {
                    string str = splittedC[1];

                    if (input.Contains(str))
                    {
                        Console.WriteLine(true);
                    }
                    else
                    {
                        Console.WriteLine(false);
                    }
                }
                else if (newCom == "Start")
                {
                    string str = splittedC[1];

                    if (input.IndexOf(str) == 0)
                    {
                        Console.WriteLine(true);
                    }
                    else
                    {
                        Console.WriteLine(false);
                    }
                }
                else if (newCom == "Lowercase")
                {
                    input = input.ToLower();
                    Console.WriteLine(input);
                }
                else if (newCom == "FindIndex")
                {
                    string findStr = splittedC[1];
                    Console.WriteLine(input.LastIndexOf(findStr));
                }
                else if (newCom == "Remove")
                {
                    int startIndex = int.Parse(splittedC[1]);
                    int count = int.Parse(splittedC[2]);

                    if (startIndex >= 0 && count <= input.Length)
                    {
                        input = input.Remove(startIndex, count);
                        Console.WriteLine(input);
                    }
                }

            }
        }
    }
}