Present participle; Past participle - preserving - preserved Present - preserve - preserve - preserves - preserve - preserve - preserve Past - preserved - preserved - preserved - preserved - preserved - preserved Future - will preserve - will preserve - will preserve - will preserve - will preserve - will preserve Present conditional - would preserve - would preserve - would preserve - would preserve - would preserve - would preserve Present Perfect - have preserved - have preserved - has preserved - have preserved - have preserved - have preserved Past Perfect - had preserved - had preserved - had preserved - had preserved - had preserved - had preserved Future Perfect - will have preserved - will have preserved - will have preserved - will have preserved - will have preserved - will have preserved Past conditional - would have preserved - would have preserved - would have preserved - would have preserved - would have preserved - would have preserved Imperative - - - preserve - - - - - - - -