English verb conjugation
SHOULD LESSON

Regular verb: lesson - lessoned - lessoned

Affirmation

Simple form	V-ing form
I'd lesson you'd lesson he'd lesson we'd lesson you'd lesson they'd lesson	I'd be lessoning you'd be lessoning he'd be lessoning we'd be lessoning you'd be lessoning they'd be lessoning
Perfect	V-ing perfect
I should've lessoned you should've lessoned he should've lessoned we should've lessoned you should've lessoned they should've lessoned	I should've been lessoning you should've been lessoning he should've been lessoning we should've been lessoning you should've been lessoning they should've been lessoning

Negation

Simple form	V-ing form
I shouldn't lesson you shouldn't lesson he shouldn't lesson we shouldn't lesson you shouldn't lesson they shouldn't lesson	I shouldn't be lessoning you shouldn't be lessoning he shouldn't be lessoning we shouldn't be lessoning you shouldn't be lessoning they shouldn't be lessoning
Perfect	V-ing perfect
I shouldn't have lessoned you shouldn't have lessoned he shouldn't have lessoned we shouldn't have lessoned you shouldn't have lessoned they shouldn't have lessoned	I shouldn't have been lessoning you shouldn't have been lessoning he shouldn't have been lessoning we shouldn't have been lessoning you shouldn't have been lessoning they shouldn't have been lessoning

Interrogative form

Simple form	V-ing form
should I lesson? should you lesson? should he lesson? should we lesson? should you lesson? should they lesson?	should I be lessoning? should you be lessoning? should he be lessoning? should we be lessoning? should you be lessoning? should they be lessoning?
Perfect	V-ing perfect
should I have lessoned? should you have lessoned? should he have lessoned? should we have lessoned? should you have lessoned? should they have lessoned?	should I have been lessoning? should you have been lessoning? should he have been lessoning? should we have been lessoning? should you have been lessoning? should they have been lessoning?

Interro-negative form

Simple form	V-ing form
shouldn't I lesson? shouldn't you lesson? shouldn't he lesson? shouldn't we lesson? shouldn't you lesson? shouldn't they lesson?	shouldn't I be lessoning? shouldn't you be lessoning? shouldn't he be lessoning? shouldn't we be lessoning? shouldn't you be lessoning? shouldn't they be lessoning?
Perfect	V-ing perfect
shouldn't I have lessoned? shouldn't you have lessoned? shouldn't he have lessoned? shouldn't we have lessoned? shouldn't you have lessoned? shouldn't they have lessoned?	shouldn't I have been lessoning? shouldn't you have been lessoning? shouldn't he have been lessoning? shouldn't we have been lessoning? shouldn't you have been lessoning? shouldn't they have been lessoning?