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