English verb conjugation
SHOULD PLACARD

Regular verb: placard - placarded - placarded

Affirmation

Simple form	V-ing form
I should placard you should placard he should placard we should placard you should placard they should placard	I should be placarding you should be placarding he should be placarding we should be placarding you should be placarding they should be placarding
Perfect	V-ing perfect
I should have placarded you should have placarded he should have placarded we should have placarded you should have placarded they should have placarded	I should have been placarding you should have been placarding he should have been placarding we should have been placarding you should have been placarding they should have been placarding

Negation

Simple form	V-ing form
I should not placard you should not placard he should not placard we should not placard you should not placard they should not placard	I should not be placarding you should not be placarding he should not be placarding we should not be placarding you should not be placarding they should not be placarding
Perfect	V-ing perfect
I should not have placarded you should not have placarded he should not have placarded we should not have placarded you should not have placarded they should not have placarded	I should not have been placarding you should not have been placarding he should not have been placarding we should not have been placarding you should not have been placarding they should not have been placarding

Interrogative form

Simple form	V-ing form
should I placard? should you placard? should he placard? should we placard? should you placard? should they placard?	should I be placarding? should you be placarding? should he be placarding? should we be placarding? should you be placarding? should they be placarding?
Perfect	V-ing perfect
should I have placarded? should you have placarded? should he have placarded? should we have placarded? should you have placarded? should they have placarded?	should I have been placarding? should you have been placarding? should he have been placarding? should we have been placarding? should you have been placarding? should they have been placarding?

Interro-negative form

Simple form	V-ing form
should I not placard? should you not placard? should he not placard? should we not placard? should you not placard? should they not placard?	should I not be placarding? should you not be placarding? should he not be placarding? should we not be placarding? should you not be placarding? should they not be placarding?
Perfect	V-ing perfect
should I not have placarded? should you not have placarded? should he not have placarded? should we not have placarded? should you not have placarded? should they not have placarded?	should I not have been placarding? should you not have been placarding? should he not have been placarding? should we not have been placarding? should you not have been placarding? should they not have been placarding?