English verb conjugation
SHOULD ITCH

Regular verb: itch - itched - itched

Affirmation

Simple form	V-ing form
I'd itch you'd itch she'd itch we'd itch you'd itch they'd itch	I'd be itching you'd be itching she'd be itching we'd be itching you'd be itching they'd be itching
Perfect	V-ing perfect
I should've itched you should've itched she should've itched we should've itched you should've itched they should've itched	I should've been itching you should've been itching she should've been itching we should've been itching you should've been itching they should've been itching

Negation

Simple form	V-ing form
I shouldn't itch you shouldn't itch she shouldn't itch we shouldn't itch you shouldn't itch they shouldn't itch	I shouldn't be itching you shouldn't be itching she shouldn't be itching we shouldn't be itching you shouldn't be itching they shouldn't be itching
Perfect	V-ing perfect
I shouldn't have itched you shouldn't have itched she shouldn't have itched we shouldn't have itched you shouldn't have itched they shouldn't have itched	I shouldn't have been itching you shouldn't have been itching she 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	V-ing form
should I itch? should you itch? should she itch? should we itch? should you itch? should they itch?	should I be itching? should you be itching? should she be itching? should we be itching? should you be itching? should they be itching?
Perfect	V-ing perfect
should I have itched? should you have itched? should she have itched? should we have itched? should you have itched? should they have itched?	should I have been itching? should you have been itching? should she have been itching? should we have been itching? should you have been itching? should they have been itching?

Interro-negative form

Simple form	V-ing form
shouldn't I itch? shouldn't you itch? shouldn't she itch? shouldn't we itch? shouldn't you itch? shouldn't they itch?	shouldn't I be itching? shouldn't you be itching? shouldn't she be itching? shouldn't we be itching? shouldn't you be itching? shouldn't they be itching?
Perfect	V-ing perfect
shouldn't I have itched? shouldn't you have itched? shouldn't she have itched? shouldn't we have itched? shouldn't you have itched? shouldn't they have itched?	shouldn't I have been itching? shouldn't you have been itching? shouldn't she have been itching? shouldn't we have been itching? shouldn't you have been itching? shouldn't they have been itching?