English verb conjugation
MUST PLACARD

Regular verb: placard - placarded - placarded

Affirmation

Simple form	V-ing form
I must placard you must placard she must placard we must placard you must placard they must placard	I must be placarding you must be placarding she 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 she 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 she 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 she 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 she 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 she 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 she 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 she placard? must we placard? must you placard? must they placard?	must I be placarding? must you be placarding? must she 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 she 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 she 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 she 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 she 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 she 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 she have been placarding? mustn't we have been placarding? mustn't you have been placarding? mustn't they have been placarding?