Help me create a clipboard script for this:

[legend maxfreak]

Help me create a script for this, pics in the attachments below:
In the first pic after searching for the words with my anagram solver I then pasted in the game.
Then in the second, new words were added, I search again and wanted to paste, so help me create a script than won't allow the results in my first search to appear when pasting the second time cos words can't be repeated twice in the game.