Present participle; Past participle - worrying - worried Present - worry - worry - worries - worry - worry - worry Past - worried - worried - worried - worried - worried - worried Future - will worry - will worry - will worry - will worry - will worry - will worry Present conditional - would worry - would worry - would worry - would worry - would worry - would worry Present Perfect - have worried - have worried - has worried - have worried - have worried - have worried Past Perfect - had worried - had worried - had worried - had worried - had worried - had worried Future Perfect - will have worried - will have worried - will have worried - will have worried - will have worried - will have worried Past conditional - would have worried - would have worried - would have worried - would have worried - would have worried - would have worried Imperative - - - worry - - - - - - - -