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