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