I don't tumble you don't tumble she doesn't tumble we don't tumble you don't tumble they don't tumble
Present continuous
I'm not tumbling you aren't tumbling she isn't tumbling we aren't tumbling you aren't tumbling they aren't tumbling
Preterite
I didn't tumble you didn't tumble she didn't tumble we didn't tumble you didn't tumble they didn't tumble
Preterite continuous
I wasn't tumbling you weren't tumbling she wasn't tumbling we weren't tumbling you weren't tumbling they weren't tumbling
Present perfect
I haven't tumbled you haven't tumbled she hasn't tumbled we haven't tumbled you haven't tumbled they haven't tumbled
Present perfect continuous
I haven't been tumbling you haven't been tumbling she hasn't been tumbling we haven't been tumbling you haven't been tumbling they haven't been tumbling
Pluperfect
I hadn't tumbled you hadn't tumbled she hadn't tumbled we hadn't tumbled you hadn't tumbled they hadn't tumbled
Pluperfect continuous
I hadn't been tumbling you hadn't been tumbling she hadn't been tumbling we hadn't been tumbling you hadn't been tumbling they hadn't been tumbling
Future
I won't tumble you won't tumble she won't tumble we won't tumble you won't tumble they won't tumble
Future continuous
I won't be tumbling you won't be tumbling she won't be tumbling we won't be tumbling you won't be tumbling they won't be tumbling
Future perfect
I won't have tumbled you won't have tumbled she won't have tumbled we won't have tumbled you won't have tumbled they won't have tumbled
Future perfect continuous
I won't have been tumbling you won't have been tumbling she won't have been tumbling we won't have been tumbling you won't have been tumbling they won't have been tumbling
Conditional
Present
I wouldn't tumble you wouldn't tumble she wouldn't tumble we wouldn't tumble you wouldn't tumble they wouldn't tumble
Present continuous
I wouldn't be tumbling you wouldn't be tumbling she wouldn't be tumbling we wouldn't be tumbling you wouldn't be tumbling they wouldn't be tumbling
Past
I wouldn't have tumbled you wouldn't have tumbled she wouldn't have tumbled we wouldn't have tumbled you wouldn't have tumbled they wouldn't have tumbled
Past continuous
I wouldn't have been tumbling you wouldn't have been tumbling she wouldn't have been tumbling we wouldn't have been tumbling you wouldn't have been tumbling they wouldn't have been tumbling