Present participle; Past participle - overturning - overturned Present - overturn - overturn - overturns - overturn - overturn - overturn Past - overturned - overturned - overturned - overturned - overturned - overturned Future - will overturn - will overturn - will overturn - will overturn - will overturn - will overturn Present conditional - would overturn - would overturn - would overturn - would overturn - would overturn - would overturn Present Perfect - have overturned - have overturned - has overturned - have overturned - have overturned - have overturned Past Perfect - had overturned - had overturned - had overturned - had overturned - had overturned - had overturned Future Perfect - will have overturned - will have overturned - will have overturned - will have overturned - will have overturned - will have overturned Past conditional - would have overturned - would have overturned - would have overturned - would have overturned - would have overturned - would have overturned Imperative - - - overturn - - - - - - - -