public static void Main()
string text_script = "Close on a portrait of the handsome prince -- as the BEAST'S gaint paw slashes it.";
string[] text_list = text_script.Split(' ');
foreach (string text_part in text_list){
if (text_part.Contains("Close") == true || text_part.Contains("on") == true){
new_text += text_part.ToUpper() + " ";
new_text += text_part.ToLower() + " ";
Console.WriteLine(new_text);