Eh? Isn't that impossible? After the third day, if you eliminate the first two suspects in a three person clue, the last person remaining is either a definite sheep or definite wolf, since the shepherd has to give a warning if it's the last round. Unless we get a three-person clue in tomorrow's round and not today's... well, in any case, it doesn't matter much to us. The less people for the sheep to trust, the better. And having a safe sheep pretty much dictates who we should to eat, so it's a bother if we want to eat someone else.