Present participle; Past participle - tripling - tripled Present - triple - triple - triples - triple - triple - triple Past - tripled - tripled - tripled - tripled - tripled - tripled Future - will triple - will triple - will triple - will triple - will triple - will triple Present conditional - would triple - would triple - would triple - would triple - would triple - would triple Present Perfect - have tripled - have tripled - has tripled - have tripled - have tripled - have tripled Past Perfect - had tripled - had tripled - had tripled - had tripled - had tripled - had tripled Future Perfect - will have tripled - will have tripled - will have tripled - will have tripled - will have tripled - will have tripled Past conditional - would have tripled - would have tripled - would have tripled - would have tripled - would have tripled - would have tripled Imperative - - - triple - - - - - - - -