Present participle; Past participle - swabbing - swabbed Present - swab - swab - swabs - swab - swab - swab Past - swabbed - swabbed - swabbed - swabbed - swabbed - swabbed Future - will swab - will swab - will swab - will swab - will swab - will swab Present conditional - would swab - would swab - would swab - would swab - would swab - would swab Present Perfect - have swabbed - have swabbed - has swabbed - have swabbed - have swabbed - have swabbed Past Perfect - had swabbed - had swabbed - had swabbed - had swabbed - had swabbed - had swabbed Future Perfect - will have swabbed - will have swabbed - will have swabbed - will have swabbed - will have swabbed - will have swabbed Past conditional - would have swabbed - would have swabbed - would have swabbed - would have swabbed - would have swabbed - would have swabbed Imperative - - - swab - - - - - - - -