Present participle; Past participle - pioneering - pioneered Present - pioneer - pioneer - pioneers - pioneer - pioneer - pioneer Past - pioneered - pioneered - pioneered - pioneered - pioneered - pioneered Future - will pioneer - will pioneer - will pioneer - will pioneer - will pioneer - will pioneer Present conditional - would pioneer - would pioneer - would pioneer - would pioneer - would pioneer - would pioneer Present Perfect - have pioneered - have pioneered - has pioneered - have pioneered - have pioneered - have pioneered Past Perfect - had pioneered - had pioneered - had pioneered - had pioneered - had pioneered - had pioneered Future Perfect - will have pioneered - will have pioneered - will have pioneered - will have pioneered - will have pioneered - will have pioneered Past conditional - would have pioneered - would have pioneered - would have pioneered - would have pioneered - would have pioneered - would have pioneered Imperative - - - pioneer - - - - - - - -