[RESOLVED] Checking multiple words existance in a textfield

Hello,

Guess I'm having a textbox named Text1 (or richtextbox, if it isn't possible in textbox) filled with some alphabetical music notes that are separated by commas, like:

Then there is another textbox named Text2 filled with:
As you see all of the music notes above are available in the first textbox.


Or the Text2 can be filled like this:
Which there are some music notes that doesn't exist in the Text1.


How can I check if all of the music notes in Text2 are ready in Text1 or not?