English verb conjugation
SHOULD DISBELIEVE

Regular verb: disbelieve - disbelieved - disbelieved

Affirmation

Simple form	V-ing form
I'd disbelieve you'd disbelieve he'd disbelieve we'd disbelieve you'd disbelieve they'd disbelieve	I'd be disbelieving you'd be disbelieving he'd be disbelieving we'd be disbelieving you'd be disbelieving they'd be disbelieving
Perfect	V-ing perfect
I should've disbelieved you should've disbelieved he should've disbelieved we should've disbelieved you should've disbelieved they should've disbelieved	I should've been disbelieving you should've been disbelieving he should've been disbelieving we should've been disbelieving you should've been disbelieving they should've been disbelieving

Negation

Simple form	V-ing form
I shouldn't disbelieve you shouldn't disbelieve he shouldn't disbelieve we shouldn't disbelieve you shouldn't disbelieve they shouldn't disbelieve	I shouldn't be disbelieving you shouldn't be disbelieving he shouldn't be disbelieving we shouldn't be disbelieving you shouldn't be disbelieving they shouldn't be disbelieving
Perfect	V-ing perfect
I shouldn't have disbelieved you shouldn't have disbelieved he shouldn't have disbelieved we shouldn't have disbelieved you shouldn't have disbelieved they shouldn't have disbelieved	I shouldn't have been disbelieving you shouldn't have been disbelieving he shouldn't have been disbelieving we shouldn't have been disbelieving you shouldn't have been disbelieving they shouldn't have been disbelieving

Interrogative form

Simple form	V-ing form
should I disbelieve? should you disbelieve? should he disbelieve? should we disbelieve? should you disbelieve? should they disbelieve?	should I be disbelieving? should you be disbelieving? should he be disbelieving? should we be disbelieving? should you be disbelieving? should they be disbelieving?
Perfect	V-ing perfect
should I have disbelieved? should you have disbelieved? should he have disbelieved? should we have disbelieved? should you have disbelieved? should they have disbelieved?	should I have been disbelieving? should you have been disbelieving? should he have been disbelieving? should we have been disbelieving? should you have been disbelieving? should they have been disbelieving?

Interro-negative form

Simple form	V-ing form
shouldn't I disbelieve? shouldn't you disbelieve? shouldn't he disbelieve? shouldn't we disbelieve? shouldn't you disbelieve? shouldn't they disbelieve?	shouldn't I be disbelieving? shouldn't you be disbelieving? shouldn't he be disbelieving? shouldn't we be disbelieving? shouldn't you be disbelieving? shouldn't they be disbelieving?
Perfect	V-ing perfect
shouldn't I have disbelieved? shouldn't you have disbelieved? shouldn't he have disbelieved? shouldn't we have disbelieved? shouldn't you have disbelieved? shouldn't they have disbelieved?	shouldn't I have been disbelieving? shouldn't you have been disbelieving? shouldn't he have been disbelieving? shouldn't we have been disbelieving? shouldn't you have been disbelieving? shouldn't they have been disbelieving?