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