Present participle; Past participle - shrilling - shrilled Present - shrill - shrill - shrills - shrill - shrill - shrill Past - shrilled - shrilled - shrilled - shrilled - shrilled - shrilled Future - will shrill - will shrill - will shrill - will shrill - will shrill - will shrill Present conditional - would shrill - would shrill - would shrill - would shrill - would shrill - would shrill Present Perfect - have shrilled - have shrilled - has shrilled - have shrilled - have shrilled - have shrilled Past Perfect - had shrilled - had shrilled - had shrilled - had shrilled - had shrilled - had shrilled Future Perfect - will have shrilled - will have shrilled - will have shrilled - will have shrilled - will have shrilled - will have shrilled Past conditional - would have shrilled - would have shrilled - would have shrilled - would have shrilled - would have shrilled - would have shrilled Imperative - - - shrill - - - - - - - -