排空

排空	pái kōng	to drain out; to empty / to discharge (waste gas) into the air / to soar up into the sky
排	pái	to arrange in order; to line up / to exclude; to eliminate; to repel; to expel; to discharge / (literary) to push aside; to force open / to rehearse / row; line / platoon / (bound form) steak; chop / (bound form) raft / classifier for rows or lines (of people or things)
空	kōng	empty / air / sky / in vain
空	kòng	to empty / vacant / unoccupied / space / leisure / free time