English verb conjugation
SHOULD COUNTERCHECK

Regular verb: countercheck - counterchecked - counterchecked

Affirmation

Simple form	V-ing form
I'd countercheck you'd countercheck she'd countercheck we'd countercheck you'd countercheck they'd countercheck	I'd be counterchecking you'd be counterchecking she'd be counterchecking we'd be counterchecking you'd be counterchecking they'd be counterchecking
Perfect	V-ing perfect
I should've counterchecked you should've counterchecked she should've counterchecked we should've counterchecked you should've counterchecked they should've counterchecked	I should've been counterchecking you should've been counterchecking she should've been counterchecking we should've been counterchecking you should've been counterchecking they should've been counterchecking

Negation

Simple form	V-ing form
I shouldn't countercheck you shouldn't countercheck she shouldn't countercheck we shouldn't countercheck you shouldn't countercheck they shouldn't countercheck	I shouldn't be counterchecking you shouldn't be counterchecking she shouldn't be counterchecking we shouldn't be counterchecking you shouldn't be counterchecking they shouldn't be counterchecking
Perfect	V-ing perfect
I shouldn't have counterchecked you shouldn't have counterchecked she shouldn't have counterchecked we shouldn't have counterchecked you shouldn't have counterchecked they shouldn't have counterchecked	I shouldn't have been counterchecking you shouldn't have been counterchecking she shouldn't have been counterchecking we shouldn't have been counterchecking you shouldn't have been counterchecking they shouldn't have been counterchecking

Interrogative form

Simple form	V-ing form
should I countercheck? should you countercheck? should she countercheck? should we countercheck? should you countercheck? should they countercheck?	should I be counterchecking? should you be counterchecking? should she be counterchecking? should we be counterchecking? should you be counterchecking? should they be counterchecking?
Perfect	V-ing perfect
should I have counterchecked? should you have counterchecked? should she have counterchecked? should we have counterchecked? should you have counterchecked? should they have counterchecked?	should I have been counterchecking? should you have been counterchecking? should she have been counterchecking? should we have been counterchecking? should you have been counterchecking? should they have been counterchecking?

Interro-negative form

Simple form	V-ing form
shouldn't I countercheck? shouldn't you countercheck? shouldn't she countercheck? shouldn't we countercheck? shouldn't you countercheck? shouldn't they countercheck?	shouldn't I be counterchecking? shouldn't you be counterchecking? shouldn't she be counterchecking? shouldn't we be counterchecking? shouldn't you be counterchecking? shouldn't they be counterchecking?
Perfect	V-ing perfect
shouldn't I have counterchecked? shouldn't you have counterchecked? shouldn't she have counterchecked? shouldn't we have counterchecked? shouldn't you have counterchecked? shouldn't they have counterchecked?	shouldn't I have been counterchecking? shouldn't you have been counterchecking? shouldn't she have been counterchecking? shouldn't we have been counterchecking? shouldn't you have been counterchecking? shouldn't they have been counterchecking?