Present participle; Past participle - swallowing - swallowed Present - swallow - swallow - swallows - swallow - swallow - swallow Past - swallowed - swallowed - swallowed - swallowed - swallowed - swallowed Future - will swallow - will swallow - will swallow - will swallow - will swallow - will swallow Present conditional - would swallow - would swallow - would swallow - would swallow - would swallow - would swallow Present Perfect - have swallowed - have swallowed - has swallowed - have swallowed - have swallowed - have swallowed Past Perfect - had swallowed - had swallowed - had swallowed - had swallowed - had swallowed - had swallowed Future Perfect - will have swallowed - will have swallowed - will have swallowed - will have swallowed - will have swallowed - will have swallowed Past conditional - would have swallowed - would have swallowed - would have swallowed - would have swallowed - would have swallowed - would have swallowed Imperative - - - swallow - - - - - - - -