English verb conjugation
SHOULD SCREECH

Regular verb: screech - screeched - screeched

Affirmation

Simple form	V-ing form
I'd screech you'd screech he'd screech we'd screech you'd screech they'd screech	I'd be screeching you'd be screeching he'd be screeching we'd be screeching you'd be screeching they'd be screeching
Perfect	V-ing perfect
I should've screeched you should've screeched he should've screeched we should've screeched you should've screeched they should've screeched	I should've been screeching you should've been screeching he should've been screeching we should've been screeching you should've been screeching they should've been screeching

Negation

Simple form	V-ing form
I shouldn't screech you shouldn't screech he shouldn't screech we shouldn't screech you shouldn't screech they shouldn't screech	I shouldn't be screeching you shouldn't be screeching he shouldn't be screeching we shouldn't be screeching you shouldn't be screeching they shouldn't be screeching
Perfect	V-ing perfect
I shouldn't have screeched you shouldn't have screeched he shouldn't have screeched we shouldn't have screeched you shouldn't have screeched they shouldn't have screeched	I shouldn't have been screeching you shouldn't have been screeching he shouldn't have been screeching we shouldn't have been screeching you shouldn't have been screeching they shouldn't have been screeching

Interrogative form

Simple form	V-ing form
should I screech? should you screech? should he screech? should we screech? should you screech? should they screech?	should I be screeching? should you be screeching? should he be screeching? should we be screeching? should you be screeching? should they be screeching?
Perfect	V-ing perfect
should I have screeched? should you have screeched? should he have screeched? should we have screeched? should you have screeched? should they have screeched?	should I have been screeching? should you have been screeching? should he have been screeching? should we have been screeching? should you have been screeching? should they have been screeching?

Interro-negative form

Simple form	V-ing form
shouldn't I screech? shouldn't you screech? shouldn't he screech? shouldn't we screech? shouldn't you screech? shouldn't they screech?	shouldn't I be screeching? shouldn't you be screeching? shouldn't he be screeching? shouldn't we be screeching? shouldn't you be screeching? shouldn't they be screeching?
Perfect	V-ing perfect
shouldn't I have screeched? shouldn't you have screeched? shouldn't he have screeched? shouldn't we have screeched? shouldn't you have screeched? shouldn't they have screeched?	shouldn't I have been screeching? shouldn't you have been screeching? shouldn't he have been screeching? shouldn't we have been screeching? shouldn't you have been screeching? shouldn't they have been screeching?