Present participle; Past participle - thralling - thralled Present - thrall - thrall - thralls - thrall - thrall - thrall Past - thralled - thralled - thralled - thralled - thralled - thralled Future - will thrall - will thrall - will thrall - will thrall - will thrall - will thrall Present conditional - would thrall - would thrall - would thrall - would thrall - would thrall - would thrall Present Perfect - have thralled - have thralled - has thralled - have thralled - have thralled - have thralled Past Perfect - had thralled - had thralled - had thralled - had thralled - had thralled - had thralled Future Perfect - will have thralled - will have thralled - will have thralled - will have thralled - will have thralled - will have thralled Past conditional - would have thralled - would have thralled - would have thralled - would have thralled - would have thralled - would have thralled Imperative - - - thrall - - - - - - - -