English verb conjugation
SHOULD FOOL

Regular verb: fool - fooled - fooled

Affirmation

Simple form	V-ing form
I'd fool you'd fool she'd fool we'd fool you'd fool they'd fool	I'd be fooling you'd be fooling she'd be fooling we'd be fooling you'd be fooling they'd be fooling
Perfect	V-ing perfect
I should've fooled you should've fooled she should've fooled we should've fooled you should've fooled they should've fooled	I should've been fooling you should've been fooling she should've been fooling we should've been fooling you should've been fooling they should've been fooling

Negation

Simple form	V-ing form
I shouldn't fool you shouldn't fool she shouldn't fool we shouldn't fool you shouldn't fool they shouldn't fool	I shouldn't be fooling you shouldn't be fooling she shouldn't be fooling we shouldn't be fooling you shouldn't be fooling they shouldn't be fooling
Perfect	V-ing perfect
I shouldn't have fooled you shouldn't have fooled she shouldn't have fooled we shouldn't have fooled you shouldn't have fooled they shouldn't have fooled	I shouldn't have been fooling you shouldn't have been fooling she shouldn't have been fooling we shouldn't have been fooling you shouldn't have been fooling they shouldn't have been fooling

Interrogative form

Simple form	V-ing form
should I fool? should you fool? should she fool? should we fool? should you fool? should they fool?	should I be fooling? should you be fooling? should she be fooling? should we be fooling? should you be fooling? should they be fooling?
Perfect	V-ing perfect
should I have fooled? should you have fooled? should she have fooled? should we have fooled? should you have fooled? should they have fooled?	should I have been fooling? should you have been fooling? should she have been fooling? should we have been fooling? should you have been fooling? should they have been fooling?

Interro-negative form

Simple form	V-ing form
shouldn't I fool? shouldn't you fool? shouldn't she fool? shouldn't we fool? shouldn't you fool? shouldn't they fool?	shouldn't I be fooling? shouldn't you be fooling? shouldn't she be fooling? shouldn't we be fooling? shouldn't you be fooling? shouldn't they be fooling?
Perfect	V-ing perfect
shouldn't I have fooled? shouldn't you have fooled? shouldn't she have fooled? shouldn't we have fooled? shouldn't you have fooled? shouldn't they have fooled?	shouldn't I have been fooling? shouldn't you have been fooling? shouldn't she have been fooling? shouldn't we have been fooling? shouldn't you have been fooling? shouldn't they have been fooling?