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