don't I fumble? don't you fumble? doesn't he fumble? don't we fumble? don't you fumble? don't they fumble?
Present continuous
am I not fumbling? aren't you fumbling? isn't he fumbling? aren't we fumbling? aren't you fumbling? aren't they fumbling?
Preterite
didn't I fumble? didn't you fumble? didn't he fumble? didn't we fumble? didn't you fumble? didn't they fumble?
Preterite continuous
wasn't I fumbling? weren't you fumbling? wasn't he fumbling? weren't we fumbling? weren't you fumbling? weren't they fumbling?
Present perfect
haven't I fumbled? haven't you fumbled? hasn't he fumbled? haven't we fumbled? haven't you fumbled? haven't they fumbled?
Present perfect continuous
haven't I been fumbling? haven't you been fumbling? hasn't he been fumbling? haven't we been fumbling? haven't you been fumbling? haven't they been fumbling?
Pluperfect
hadn't I fumbled? hadn't you fumbled? hadn't he fumbled? hadn't we fumbled? hadn't you fumbled? hadn't they fumbled?
Pluperfect continuous
hadn't I been fumbling? hadn't you been fumbling? hadn't he been fumbling? hadn't we been fumbling? hadn't you been fumbling? hadn't they been fumbling?
Future
won't I fumble? won't you fumble? won't he fumble? won't we fumble? won't you fumble? won't they fumble?
Future continuous
won't I be fumbling? won't you be fumbling? won't he be fumbling? won't we be fumbling? won't you be fumbling? won't they be fumbling?
Future perfect
won't I have fumbled? won't you have fumbled? won't he have fumbled? won't we have fumbled? won't you have fumbled? won't they have fumbled?
Future perfect continuous
won't I have been fumbling? won't you have been fumbling? won't he have been fumbling? won't we have been fumbling? won't you have been fumbling? won't they have been fumbling?
Conditional
Present
wouldn't I fumble? wouldn't you fumble? wouldn't he fumble? wouldn't we fumble? wouldn't you fumble? wouldn't they fumble?
Present continuous
wouldn't I be fumbling? wouldn't you be fumbling? wouldn't he be fumbling? wouldn't we be fumbling? wouldn't you be fumbling? wouldn't they be fumbling?
Past
wouldn't I have fumbled? wouldn't you have fumbled? wouldn't he have fumbled? wouldn't we have fumbled? wouldn't you have fumbled? wouldn't they have fumbled?
Past continuous
wouldn't I have been fumbling? wouldn't you have been fumbling? wouldn't he have been fumbling? wouldn't we have been fumbling? wouldn't you have been fumbling? wouldn't they have been fumbling?