Crossword clues for use a combineAnswerClueONETWOCombination used by 39-DownANDORCombination used in legal documents.ALTKEYPC feature only used in combinationsCTRLPC key used in combinationsALTPC key used in combinationsGONCombining form used with penta, deca, etc.RATERCombining form used with first-, second-, etc.PLASMCombining form used with proto-, ecto-, etc.YESTERCombining form used with day, year, etc.GONCombining form used with tetra, penta, etc.MIDCombining form used with summer and winter.CRATCombining form used with demo, pluto, etc.SIDERCombining form used with East and West.THRESHUse a combineCTRLKey used in combinationsALTKey used in PC combinations