Present participle; Past participle - sicking - sicked Present - sick - sick - sicks - sick - sick - sick Past - sicked - sicked - sicked - sicked - sicked - sicked Future - will sick - will sick - will sick - will sick - will sick - will sick Present conditional - would sick - would sick - would sick - would sick - would sick - would sick Present Perfect - have sicked - have sicked - has sicked - have sicked - have sicked - have sicked Past Perfect - had sicked - had sicked - had sicked - had sicked - had sicked - had sicked Future Perfect - will have sicked - will have sicked - will have sicked - will have sicked - will have sicked - will have sicked Past conditional - would have sicked - would have sicked - would have sicked - would have sicked - would have sicked - would have sicked Imperative - - - sick - - - - - - - -