Present participle; Past participle - registering - registered Present - register - register - registers - register - register - register Past - registered - registered - registered - registered - registered - registered Future - will register - will register - will register - will register - will register - will register Present conditional - would register - would register - would register - would register - would register - would register Present Perfect - have registered - have registered - has registered - have registered - have registered - have registered Past Perfect - had registered - had registered - had registered - had registered - had registered - had registered Future Perfect - will have registered - will have registered - will have registered - will have registered - will have registered - will have registered Past conditional - would have registered - would have registered - would have registered - would have registered - would have registered - would have registered Imperative - - - register - - - - - - - -