English verb conjugation
MUST PUN

Regular verb: pun - punned - punned

Affirmation

Simple form	V-ing form
I must pun you must pun she must pun we must pun you must pun they must pun	I must be punning you must be punning she must be punning we must be punning you must be punning they must be punning
Perfect	V-ing perfect
I must have punned you must have punned she must have punned we must have punned you must have punned they must have punned	I must have been punning you must have been punning she must have been punning we must have been punning you must have been punning they must have been punning

Negation

Simple form	V-ing form
I mustn't pun you mustn't pun she mustn't pun we mustn't pun you mustn't pun they mustn't pun	I mustn't be punning you mustn't be punning she mustn't be punning we mustn't be punning you mustn't be punning they mustn't be punning
Perfect	V-ing perfect
I mustn't have punned you mustn't have punned she mustn't have punned we mustn't have punned you mustn't have punned they mustn't have punned	I mustn't have been punning you mustn't have been punning she mustn't have been punning we mustn't have been punning you mustn't have been punning they mustn't have been punning

Interrogative form

Simple form	V-ing form
must I pun? must you pun? must she pun? must we pun? must you pun? must they pun?	must I be punning? must you be punning? must she be punning? must we be punning? must you be punning? must they be punning?
Perfect	V-ing perfect
must I have punned? must you have punned? must she have punned? must we have punned? must you have punned? must they have punned?	must I have been punning? must you have been punning? must she have been punning? must we have been punning? must you have been punning? must they have been punning?

Interro-negative form

Simple form	V-ing form
mustn't I pun? mustn't you pun? mustn't she pun? mustn't we pun? mustn't you pun? mustn't they pun?	mustn't I be punning? mustn't you be punning? mustn't she be punning? mustn't we be punning? mustn't you be punning? mustn't they be punning?
Perfect	V-ing perfect
mustn't I have punned? mustn't you have punned? mustn't she have punned? mustn't we have punned? mustn't you have punned? mustn't they have punned?	mustn't I have been punning? mustn't you have been punning? mustn't she have been punning? mustn't we have been punning? mustn't you have been punning? mustn't they have been punning?