using System;

using System.Collections.Generic;

​

class Program

{

    static void Main()

    {

        Console.Write("Text? Insert here: ");

        FancyPrint(Console.ReadLine() ?? "");

    }

    static void FancyPrint(string Text)

    {

        string Storage = "";

        List<string> Index = new();

        List<int> Case = new();

        foreach (char i in Text)

        {

            if (char.IsLetter(i) || char.IsDigit(i))

            {

                Index.Add((Convert.ToInt32(i.ToString().ToUpper().ToCharArray()[0])).ToString());

                if (char.IsUpper(i))

                {

                    Case.Add(1);

                }

                else

                {

                    Case.Add(0);

                }

            }

            else if (i == ' ')

            {

                Index.Add("-1");

                Case.Add(0);

            }

            else

            {

                Index.Add(i.ToString());

                Case.Add(0);

            }

        }

        int index = 0;

        foreach (string i in Index)

        {

            try

            {

                int I = int.Parse(i);

                for (int x = I > 64 ? 65 : 48; x < I + 1; x++)

                {

                    if (I != 0)

                    {

                        Console.WriteLine("{0}{1}", Storage, Case[index] == 0 ? ((char)x).ToString().ToLower() : (char)x);

                        if (x == I)

                        {

                            Storage += Case[index] == 0 ? ((char)x).ToString().ToLower() : (char)x;

                        }

                    }

                }

                if (I == -1)

                {

                    Console.WriteLine("{0} ", Storage);

                    Storage += " ";

                }

            }

            catch

            {

                Console.WriteLine("{0}{1}", Storage, i);

                Storage += i;

            }

            finally

            {

                index++;

            }

        }

        Console.Read();

    }

}