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