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