Hello,
You could add the three possibilities to each word, and the question will be marked as correct if they answer the three words, not depending on sequence.
However: if the learner has entered twice or three times the same (correct) word, it will also be marked as correct. And that is certainly not what you want. I'm afraid that you'll need advanced actions to check that the entries are different. And that means mostly that you'll have to create a custom question slides, using TEB's. Did you already use advanced actions?
Lilybiri