Present participle; Past participle - pacing - paced Present - pace - pace - paces - pace - pace - pace Past - paced - paced - paced - paced - paced - paced Future - will pace - will pace - will pace - will pace - will pace - will pace Present conditional - would pace - would pace - would pace - would pace - would pace - would pace Present Perfect - have paced - have paced - has paced - have paced - have paced - have paced Past Perfect - had paced - had paced - had paced - had paced - had paced - had paced Future Perfect - will have paced - will have paced - will have paced - will have paced - will have paced - will have paced Past conditional - would have paced - would have paced - would have paced - would have paced - would have paced - would have paced Imperative - - - pace - - - - - - - -