public static void Main()
var song = SongDecoder("WubWEWUBAREWUBWUBTHEWUBCHAMPIONSWUBMYWUBFRIENDWUB");
public static string SongDecoder(string input)
if(input == null) return null;
while(input.Contains("WUB")){
word = input.Substring(0, input.IndexOf("WUB"));
input = input.Substring(input.IndexOf("WUB") + 3);
return result.ToString();