English verb conjugation
SHOULD LESSON

Regular verb: lesson - lessoned - lessoned

Affirmation

Simple form	V-ing form
I'd lesson you'd lesson she'd lesson we'd lesson you'd lesson they'd lesson	I'd be lessoning you'd be lessoning she'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 she 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 she 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 she 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 she 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 she 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 she 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 she lesson? should we lesson? should you lesson? should they lesson?	should I be lessoning? should you be lessoning? should she 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 she 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 she 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 she 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 she 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 she 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 she have been lessoning? shouldn't we have been lessoning? shouldn't you have been lessoning? shouldn't they have been lessoning?