Present participle; Past participle - bumbling - bumbled Present - bumble - bumble - bumbles - bumble - bumble - bumble Past - bumbled - bumbled - bumbled - bumbled - bumbled - bumbled Future - will bumble - will bumble - will bumble - will bumble - will bumble - will bumble Present conditional - would bumble - would bumble - would bumble - would bumble - would bumble - would bumble Present Perfect - have bumbled - have bumbled - has bumbled - have bumbled - have bumbled - have bumbled Past Perfect - had bumbled - had bumbled - had bumbled - had bumbled - had bumbled - had bumbled Future Perfect - will have bumbled - will have bumbled - will have bumbled - will have bumbled - will have bumbled - will have bumbled Past conditional - would have bumbled - would have bumbled - would have bumbled - would have bumbled - would have bumbled - would have bumbled Imperative - - - bumble - - - - - - - -