Present participle; Past participle - bumming - bummed Present - bum - bum - bums - bum - bum - bum Past - bummed - bummed - bummed - bummed - bummed - bummed Future - will bum - will bum - will bum - will bum - will bum - will bum Present conditional - would bum - would bum - would bum - would bum - would bum - would bum Present Perfect - have bummed - have bummed - has bummed - have bummed - have bummed - have bummed Past Perfect - had bummed - had bummed - had bummed - had bummed - had bummed - had bummed Future Perfect - will have bummed - will have bummed - will have bummed - will have bummed - will have bummed - will have bummed Past conditional - would have bummed - would have bummed - would have bummed - would have bummed - would have bummed - would have bummed Imperative - - - bum - - - - - - - -