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