I'd be writhing you'd be writhing she'd be writhing we'd be writhing you'd be writhing they'd be writhing
Perfect
I should've writhed you should've writhed she 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 she 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 she 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 she 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 she 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 she 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 she writhe? should we writhe? should you writhe? should they writhe?
V-ing form
should I be writhing? should you be writhing? should she be writhing? should we be writhing? should you be writhing? should they be writhing?
Perfect
should I have writhed? should you have writhed? should she 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 she 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 she 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 she 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 she 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 she have been writhing? shouldn't we have been writhing? shouldn't you have been writhing? shouldn't they have been writhing?