English verb conjugation
SHOULD WINNOW

Regular verb: winnow - winnowed - winnowed

Affirmation

Simple form	V-ing form
I'd winnow you'd winnow he'd winnow we'd winnow you'd winnow they'd winnow	I'd be winnowing you'd be winnowing he'd be winnowing we'd be winnowing you'd be winnowing they'd be winnowing
Perfect	V-ing perfect
I should've winnowed you should've winnowed he should've winnowed we should've winnowed you should've winnowed they should've winnowed	I should've been winnowing you should've been winnowing he should've been winnowing we should've been winnowing you should've been winnowing they should've been winnowing

Negation

Simple form	V-ing form
I shouldn't winnow you shouldn't winnow he shouldn't winnow we shouldn't winnow you shouldn't winnow they shouldn't winnow	I shouldn't be winnowing you shouldn't be winnowing he shouldn't be winnowing we shouldn't be winnowing you shouldn't be winnowing they shouldn't be winnowing
Perfect	V-ing perfect
I shouldn't have winnowed you shouldn't have winnowed he shouldn't have winnowed we shouldn't have winnowed you shouldn't have winnowed they shouldn't have winnowed	I shouldn't have been winnowing you shouldn't have been winnowing he shouldn't have been winnowing we shouldn't have been winnowing you shouldn't have been winnowing they shouldn't have been winnowing

Interrogative form

Simple form	V-ing form
should I winnow? should you winnow? should he winnow? should we winnow? should you winnow? should they winnow?	should I be winnowing? should you be winnowing? should he be winnowing? should we be winnowing? should you be winnowing? should they be winnowing?
Perfect	V-ing perfect
should I have winnowed? should you have winnowed? should he have winnowed? should we have winnowed? should you have winnowed? should they have winnowed?	should I have been winnowing? should you have been winnowing? should he have been winnowing? should we have been winnowing? should you have been winnowing? should they have been winnowing?

Interro-negative form

Simple form	V-ing form
shouldn't I winnow? shouldn't you winnow? shouldn't he winnow? shouldn't we winnow? shouldn't you winnow? shouldn't they winnow?	shouldn't I be winnowing? shouldn't you be winnowing? shouldn't he be winnowing? shouldn't we be winnowing? shouldn't you be winnowing? shouldn't they be winnowing?
Perfect	V-ing perfect
shouldn't I have winnowed? shouldn't you have winnowed? shouldn't he have winnowed? shouldn't we have winnowed? shouldn't you have winnowed? shouldn't they have winnowed?	shouldn't I have been winnowing? shouldn't you have been winnowing? shouldn't he have been winnowing? shouldn't we have been winnowing? shouldn't you have been winnowing? shouldn't they have been winnowing?