English verb conjugation
MUST PLACARD

Regular verb: placard - placarded - placarded

Affirmation

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

Negation

Simple form	V-ing form
I mustn't placard you mustn't placard he mustn't placard we mustn't placard you mustn't placard they mustn't placard	I mustn't be placarding you mustn't be placarding he mustn't be placarding we mustn't be placarding you mustn't be placarding they mustn't be placarding
Perfect	V-ing perfect
I mustn't have placarded you mustn't have placarded he mustn't have placarded we mustn't have placarded you mustn't have placarded they mustn't have placarded	I mustn't have been placarding you mustn't have been placarding he mustn't have been placarding we mustn't have been placarding you mustn't have been placarding they mustn't have been placarding

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I placard? mustn't you placard? mustn't he placard? mustn't we placard? mustn't you placard? mustn't they placard?	mustn't I be placarding? mustn't you be placarding? mustn't he be placarding? mustn't we be placarding? mustn't you be placarding? mustn't they be placarding?
Perfect	V-ing perfect
mustn't I have placarded? mustn't you have placarded? mustn't he have placarded? mustn't we have placarded? mustn't you have placarded? mustn't they have placarded?	mustn't I have been placarding? mustn't you have been placarding? mustn't he have been placarding? mustn't we have been placarding? mustn't you have been placarding? mustn't they have been placarding?