This is simple, you have to use a move like you would in real life. eg.
i'll start.
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Dig! (an easy one)
Player 1: hmm..Vine Whip!
Player 2: get some vines out of bushes and whip people! next...Quick Attack!
Player 3: run really fast at someone. Ember!
i'll start.
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Dig! (an easy one)