How many idioms and allusions are used in two ancient poems * * * Please write four combinations.

Things are different, worlds apart, lips and teeth are interdependent, and orioles are ranked in the ring.

Looking for fish by the tree, waiting for the rabbit, making people laugh and generous, waiting for the rabbit, waiting for the rabbit.

Seven tackled seven verticals, three looked after the thatched cottage, practiced five cars hard, and made the finishing point.

Throw a pen to join the army, hit the stream, remove the body, move the mountain from Yugong, and make Wanliangcheng.