English verb conjugation
SHOULD COUNTERCHECK

Regular verb: countercheck - counterchecked - counterchecked

Affirmation

Simple form	V-ing form
I'd countercheck you'd countercheck he'd countercheck we'd countercheck you'd countercheck they'd countercheck	I'd be counterchecking you'd be counterchecking he'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 he 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 he 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 he 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 he 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 he 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 he 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 he countercheck? should we countercheck? should you countercheck? should they countercheck?	should I be counterchecking? should you be counterchecking? should he 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 he 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 he 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 he 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 he 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 he 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 he have been counterchecking? shouldn't we have been counterchecking? shouldn't you have been counterchecking? shouldn't they have been counterchecking?