Present participle; Past participle - jerking - jerked Present - jerk - jerk - jerks - jerk - jerk - jerk Past - jerked - jerked - jerked - jerked - jerked - jerked Future - will jerk - will jerk - will jerk - will jerk - will jerk - will jerk Present conditional - would jerk - would jerk - would jerk - would jerk - would jerk - would jerk Present Perfect - have jerked - have jerked - has jerked - have jerked - have jerked - have jerked Past Perfect - had jerked - had jerked - had jerked - had jerked - had jerked - had jerked Future Perfect - will have jerked - will have jerked - will have jerked - will have jerked - will have jerked - will have jerked Past conditional - would have jerked - would have jerked - would have jerked - would have jerked - would have jerked - would have jerked Imperative - - - jerk - - - - - - - -