Present participle; Past participle - supplementing - supplemented Present - supplement - supplement - supplements - supplement - supplement - supplement Past - supplemented - supplemented - supplemented - supplemented - supplemented - supplemented Future - will supplement - will supplement - will supplement - will supplement - will supplement - will supplement Present conditional - would supplement - would supplement - would supplement - would supplement - would supplement - would supplement Present Perfect - have supplemented - have supplemented - has supplemented - have supplemented - have supplemented - have supplemented Past Perfect - had supplemented - had supplemented - had supplemented - had supplemented - had supplemented - had supplemented Future Perfect - will have supplemented - will have supplemented - will have supplemented - will have supplemented - will have supplemented - will have supplemented Past conditional - would have supplemented - would have supplemented - would have supplemented - would have supplemented - would have supplemented - would have supplemented Imperative - - - supplement - - - - - - - -