Present participle; Past participle - sinking - sunk Present - sink - sink - sinks - sink - sink - sink Past - sank - sank - sank - sank - sank - sank Future - will sink - will sink - will sink - will sink - will sink - will sink Present conditional - would sink - would sink - would sink - would sink - would sink - would sink Present Perfect - have sunk - have sunk - has sunk - have sunk - have sunk - have sunk Past Perfect - had sunk - had sunk - had sunk - had sunk - had sunk - had sunk Future Perfect - will have sunk - will have sunk - will have sunk - will have sunk - will have sunk - will have sunk Past conditional - would have sunk - would have sunk - would have sunk - would have sunk - would have sunk - would have sunk Imperative - - - sink - - - - - - - -