English verb conjugation
SHOULD GRIN

Regular verb: grin - grinned - grinned

Affirmation

Simple form	V-ing form
I should grin you should grin he should grin we should grin you should grin they should grin	I should be grinning you should be grinning he should be grinning we should be grinning you should be grinning they should be grinning
Perfect	V-ing perfect
I should have grinned you should have grinned he should have grinned we should have grinned you should have grinned they should have grinned	I should have been grinning you should have been grinning he should have been grinning we should have been grinning you should have been grinning they should have been grinning

Negation

Simple form	V-ing form
I should not grin you should not grin he should not grin we should not grin you should not grin they should not grin	I should not be grinning you should not be grinning he should not be grinning we should not be grinning you should not be grinning they should not be grinning
Perfect	V-ing perfect
I should not have grinned you should not have grinned he should not have grinned we should not have grinned you should not have grinned they should not have grinned	I should not have been grinning you should not have been grinning he should not have been grinning we should not have been grinning you should not have been grinning they should not have been grinning

Interrogative form

Simple form	V-ing form
should I grin? should you grin? should he grin? should we grin? should you grin? should they grin?	should I be grinning? should you be grinning? should he be grinning? should we be grinning? should you be grinning? should they be grinning?
Perfect	V-ing perfect
should I have grinned? should you have grinned? should he have grinned? should we have grinned? should you have grinned? should they have grinned?	should I have been grinning? should you have been grinning? should he have been grinning? should we have been grinning? should you have been grinning? should they have been grinning?

Interro-negative form

Simple form	V-ing form
should I not grin? should you not grin? should he not grin? should we not grin? should you not grin? should they not grin?	should I not be grinning? should you not be grinning? should he not be grinning? should we not be grinning? should you not be grinning? should they not be grinning?
Perfect	V-ing perfect
should I not have grinned? should you not have grinned? should he not have grinned? should we not have grinned? should you not have grinned? should they not have grinned?	should I not have been grinning? should you not have been grinning? should he not have been grinning? should we not have been grinning? should you not have been grinning? should they not have been grinning?