English verb conjugation
SHOULD BUBBLE

Regular verb: bubble - bubbled - bubbled

Affirmation

Simple form	V-ing form
I'd bubble you'd bubble he'd bubble we'd bubble you'd bubble they'd bubble	I'd be bubbling you'd be bubbling he'd be bubbling we'd be bubbling you'd be bubbling they'd be bubbling
Perfect	V-ing perfect
I should've bubbled you should've bubbled he should've bubbled we should've bubbled you should've bubbled they should've bubbled	I should've been bubbling you should've been bubbling he should've been bubbling we should've been bubbling you should've been bubbling they should've been bubbling

Negation

Simple form	V-ing form
I shouldn't bubble you shouldn't bubble he shouldn't bubble we shouldn't bubble you shouldn't bubble they shouldn't bubble	I shouldn't be bubbling you shouldn't be bubbling he shouldn't be bubbling we shouldn't be bubbling you shouldn't be bubbling they shouldn't be bubbling
Perfect	V-ing perfect
I shouldn't have bubbled you shouldn't have bubbled he shouldn't have bubbled we shouldn't have bubbled you shouldn't have bubbled they shouldn't have bubbled	I shouldn't have been bubbling you shouldn't have been bubbling he shouldn't have been bubbling we shouldn't have been bubbling you shouldn't have been bubbling they shouldn't have been bubbling

Interrogative form

Simple form	V-ing form
should I bubble? should you bubble? should he bubble? should we bubble? should you bubble? should they bubble?	should I be bubbling? should you be bubbling? should he be bubbling? should we be bubbling? should you be bubbling? should they be bubbling?
Perfect	V-ing perfect
should I have bubbled? should you have bubbled? should he have bubbled? should we have bubbled? should you have bubbled? should they have bubbled?	should I have been bubbling? should you have been bubbling? should he have been bubbling? should we have been bubbling? should you have been bubbling? should they have been bubbling?

Interro-negative form

Simple form	V-ing form
shouldn't I bubble? shouldn't you bubble? shouldn't he bubble? shouldn't we bubble? shouldn't you bubble? shouldn't they bubble?	shouldn't I be bubbling? shouldn't you be bubbling? shouldn't he be bubbling? shouldn't we be bubbling? shouldn't you be bubbling? shouldn't they be bubbling?
Perfect	V-ing perfect
shouldn't I have bubbled? shouldn't you have bubbled? shouldn't he have bubbled? shouldn't we have bubbled? shouldn't you have bubbled? shouldn't they have bubbled?	shouldn't I have been bubbling? shouldn't you have been bubbling? shouldn't he have been bubbling? shouldn't we have been bubbling? shouldn't you have been bubbling? shouldn't they have been bubbling?