Present participle; Past participle - oiling - oiled Present - oil - oil - oils - oil - oil - oil Past - oiled - oiled - oiled - oiled - oiled - oiled Future - will oil - will oil - will oil - will oil - will oil - will oil Present conditional - would oil - would oil - would oil - would oil - would oil - would oil Present Perfect - have oiled - have oiled - has oiled - have oiled - have oiled - have oiled Past Perfect - had oiled - had oiled - had oiled - had oiled - had oiled - had oiled Future Perfect - will have oiled - will have oiled - will have oiled - will have oiled - will have oiled - will have oiled Past conditional - would have oiled - would have oiled - would have oiled - would have oiled - would have oiled - would have oiled Imperative - - - oil - - - - - - - -