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