English verb conjugation
MUST PUN

Regular verb: pun - punned - punned

Affirmation

Simple form	V-ing form
I must pun you must pun he must pun we must pun you must pun they must pun	I must be punning you must be punning he 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 he 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 he 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 he 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 he 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 he 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 he 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 he pun? must we pun? must you pun? must they pun?	must I be punning? must you be punning? must he 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 he 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 he 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 he 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 he 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 he 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 he have been punning? mustn't we have been punning? mustn't you have been punning? mustn't they have been punning?