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