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