English verb conjugation
SHOULD BILLBOARD

Regular verb: billboard - billboarded - billboarded

Affirmation

Simple form	V-ing form
I should billboard you should billboard he should billboard we should billboard you should billboard they should billboard	I should be billboarding you should be billboarding he should be billboarding we should be billboarding you should be billboarding they should be billboarding
Perfect	V-ing perfect
I should have billboarded you should have billboarded he should have billboarded we should have billboarded you should have billboarded they should have billboarded	I should have been billboarding you should have been billboarding he should have been billboarding we should have been billboarding you should have been billboarding they should have been billboarding

Negation

Simple form	V-ing form
I should not billboard you should not billboard he should not billboard we should not billboard you should not billboard they should not billboard	I should not be billboarding you should not be billboarding he should not be billboarding we should not be billboarding you should not be billboarding they should not be billboarding
Perfect	V-ing perfect
I should not have billboarded you should not have billboarded he should not have billboarded we should not have billboarded you should not have billboarded they should not have billboarded	I should not have been billboarding you should not have been billboarding he should not have been billboarding we should not have been billboarding you should not have been billboarding they should not have been billboarding

Interrogative form

Simple form	V-ing form
should I billboard? should you billboard? should he billboard? should we billboard? should you billboard? should they billboard?	should I be billboarding? should you be billboarding? should he be billboarding? should we be billboarding? should you be billboarding? should they be billboarding?
Perfect	V-ing perfect
should I have billboarded? should you have billboarded? should he have billboarded? should we have billboarded? should you have billboarded? should they have billboarded?	should I have been billboarding? should you have been billboarding? should he have been billboarding? should we have been billboarding? should you have been billboarding? should they have been billboarding?

Interro-negative form

Simple form	V-ing form
should I not billboard? should you not billboard? should he not billboard? should we not billboard? should you not billboard? should they not billboard?	should I not be billboarding? should you not be billboarding? should he not be billboarding? should we not be billboarding? should you not be billboarding? should they not be billboarding?
Perfect	V-ing perfect
should I not have billboarded? should you not have billboarded? should he not have billboarded? should we not have billboarded? should you not have billboarded? should they not have billboarded?	should I not have been billboarding? should you not have been billboarding? should he not have been billboarding? should we not have been billboarding? should you not have been billboarding? should they not have been billboarding?