Present participle; Past participle - superseding - superseded Present - supersede - supersede - supersedes - supersede - supersede - supersede Past - superseded - superseded - superseded - superseded - superseded - superseded Future - will supersede - will supersede - will supersede - will supersede - will supersede - will supersede Present conditional - would supersede - would supersede - would supersede - would supersede - would supersede - would supersede Present Perfect - have superseded - have superseded - has superseded - have superseded - have superseded - have superseded Past Perfect - had superseded - had superseded - had superseded - had superseded - had superseded - had superseded Future Perfect - will have superseded - will have superseded - will have superseded - will have superseded - will have superseded - will have superseded Past conditional - would have superseded - would have superseded - would have superseded - would have superseded - would have superseded - would have superseded Imperative - - - supersede - - - - - - - -