Present participle; Past participle - plaguing - plagued Present - plague - plague - plagues - plague - plague - plague Past - plagued - plagued - plagued - plagued - plagued - plagued Future - will plague - will plague - will plague - will plague - will plague - will plague Present conditional - would plague - would plague - would plague - would plague - would plague - would plague Present Perfect - have plagued - have plagued - has plagued - have plagued - have plagued - have plagued Past Perfect - had plagued - had plagued - had plagued - had plagued - had plagued - had plagued Future Perfect - will have plagued - will have plagued - will have plagued - will have plagued - will have plagued - will have plagued Past conditional - would have plagued - would have plagued - would have plagued - would have plagued - would have plagued - would have plagued Imperative - - - plague - - - - - - - -