English verb conjugation
SHOULD CREAK

Regular verb: creak - creaked - creaked

Affirmation

Simple form	V-ing form
I'd creak you'd creak he'd creak we'd creak you'd creak they'd creak	I'd be creaking you'd be creaking he'd be creaking we'd be creaking you'd be creaking they'd be creaking
Perfect	V-ing perfect
I should've creaked you should've creaked he should've creaked we should've creaked you should've creaked they should've creaked	I should've been creaking you should've been creaking he should've been creaking we should've been creaking you should've been creaking they should've been creaking

Negation

Simple form	V-ing form
I shouldn't creak you shouldn't creak he shouldn't creak we shouldn't creak you shouldn't creak they shouldn't creak	I shouldn't be creaking you shouldn't be creaking he shouldn't be creaking we shouldn't be creaking you shouldn't be creaking they shouldn't be creaking
Perfect	V-ing perfect
I shouldn't have creaked you shouldn't have creaked he shouldn't have creaked we shouldn't have creaked you shouldn't have creaked they shouldn't have creaked	I shouldn't have been creaking you shouldn't have been creaking he shouldn't have been creaking we shouldn't have been creaking you shouldn't have been creaking they shouldn't have been creaking

Interrogative form

Simple form	V-ing form
should I creak? should you creak? should he creak? should we creak? should you creak? should they creak?	should I be creaking? should you be creaking? should he be creaking? should we be creaking? should you be creaking? should they be creaking?
Perfect	V-ing perfect
should I have creaked? should you have creaked? should he have creaked? should we have creaked? should you have creaked? should they have creaked?	should I have been creaking? should you have been creaking? should he have been creaking? should we have been creaking? should you have been creaking? should they have been creaking?

Interro-negative form

Simple form	V-ing form
shouldn't I creak? shouldn't you creak? shouldn't he creak? shouldn't we creak? shouldn't you creak? shouldn't they creak?	shouldn't I be creaking? shouldn't you be creaking? shouldn't he be creaking? shouldn't we be creaking? shouldn't you be creaking? shouldn't they be creaking?
Perfect	V-ing perfect
shouldn't I have creaked? shouldn't you have creaked? shouldn't he have creaked? shouldn't we have creaked? shouldn't you have creaked? shouldn't they have creaked?	shouldn't I have been creaking? shouldn't you have been creaking? shouldn't he have been creaking? shouldn't we have been creaking? shouldn't you have been creaking? shouldn't they have been creaking?