English verb conjugation
SHOULD WINNOW

Regular verb: winnow - winnowed - winnowed

Affirmation

Simple form	V-ing form
I'd winnow you'd winnow she'd winnow we'd winnow you'd winnow they'd winnow	I'd be winnowing you'd be winnowing she'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 she 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 she 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 she 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 she 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 she 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 she 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 she winnow? should we winnow? should you winnow? should they winnow?	should I be winnowing? should you be winnowing? should she 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 she 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 she 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 she 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 she 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 she 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 she have been winnowing? shouldn't we have been winnowing? shouldn't you have been winnowing? shouldn't they have been winnowing?