I'd be untwisting you'd be untwisting he'd be untwisting we'd be untwisting you'd be untwisting they'd be untwisting
Perfect
I should've untwisted you should've untwisted he should've untwisted we should've untwisted you should've untwisted they should've untwisted
V-ing perfect
I should've been untwisting you should've been untwisting he should've been untwisting we should've been untwisting you should've been untwisting they should've been untwisting
Negation
Simple form
I shouldn't untwist you shouldn't untwist he shouldn't untwist we shouldn't untwist you shouldn't untwist they shouldn't untwist
V-ing form
I shouldn't be untwisting you shouldn't be untwisting he shouldn't be untwisting we shouldn't be untwisting you shouldn't be untwisting they shouldn't be untwisting
Perfect
I shouldn't have untwisted you shouldn't have untwisted he shouldn't have untwisted we shouldn't have untwisted you shouldn't have untwisted they shouldn't have untwisted
V-ing perfect
I shouldn't have been untwisting you shouldn't have been untwisting he shouldn't have been untwisting we shouldn't have been untwisting you shouldn't have been untwisting they shouldn't have been untwisting
Interrogative form
Simple form
should I untwist? should you untwist? should he untwist? should we untwist? should you untwist? should they untwist?
V-ing form
should I be untwisting? should you be untwisting? should he be untwisting? should we be untwisting? should you be untwisting? should they be untwisting?
Perfect
should I have untwisted? should you have untwisted? should he have untwisted? should we have untwisted? should you have untwisted? should they have untwisted?
V-ing perfect
should I have been untwisting? should you have been untwisting? should he have been untwisting? should we have been untwisting? should you have been untwisting? should they have been untwisting?
Interro-negative form
Simple form
shouldn't I untwist? shouldn't you untwist? shouldn't he untwist? shouldn't we untwist? shouldn't you untwist? shouldn't they untwist?
V-ing form
shouldn't I be untwisting? shouldn't you be untwisting? shouldn't he be untwisting? shouldn't we be untwisting? shouldn't you be untwisting? shouldn't they be untwisting?
Perfect
shouldn't I have untwisted? shouldn't you have untwisted? shouldn't he have untwisted? shouldn't we have untwisted? shouldn't you have untwisted? shouldn't they have untwisted?
V-ing perfect
shouldn't I have been untwisting? shouldn't you have been untwisting? shouldn't he have been untwisting? shouldn't we have been untwisting? shouldn't you have been untwisting? shouldn't they have been untwisting?