Present participle; Past participle - burdening - burdened Present - burden - burden - burdens - burden - burden - burden Past - burdened - burdened - burdened - burdened - burdened - burdened Future - will burden - will burden - will burden - will burden - will burden - will burden Present conditional - would burden - would burden - would burden - would burden - would burden - would burden Present Perfect - have burdened - have burdened - has burdened - have burdened - have burdened - have burdened Past Perfect - had burdened - had burdened - had burdened - had burdened - had burdened - had burdened Future Perfect - will have burdened - will have burdened - will have burdened - will have burdened - will have burdened - will have burdened Past conditional - would have burdened - would have burdened - would have burdened - would have burdened - would have burdened - would have burdened Imperative - - - burden - - - - - - - -