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