English verb conjugation
MUST PUNCTURE

Regular verb: puncture - punctured - punctured

Affirmation

Simple form	V-ing form
I must puncture you must puncture he must puncture we must puncture you must puncture they must puncture	I must be puncturing you must be puncturing he must be puncturing we must be puncturing you must be puncturing they must be puncturing
Perfect	V-ing perfect
I must have punctured you must have punctured he must have punctured we must have punctured you must have punctured they must have punctured	I must have been puncturing you must have been puncturing he must have been puncturing we must have been puncturing you must have been puncturing they must have been puncturing

Negation

Simple form	V-ing form
I mustn't puncture you mustn't puncture he mustn't puncture we mustn't puncture you mustn't puncture they mustn't puncture	I mustn't be puncturing you mustn't be puncturing he mustn't be puncturing we mustn't be puncturing you mustn't be puncturing they mustn't be puncturing
Perfect	V-ing perfect
I mustn't have punctured you mustn't have punctured he mustn't have punctured we mustn't have punctured you mustn't have punctured they mustn't have punctured	I mustn't have been puncturing you mustn't have been puncturing he mustn't have been puncturing we mustn't have been puncturing you mustn't have been puncturing they mustn't have been puncturing

Interrogative form

Simple form	V-ing form
must I puncture? must you puncture? must he puncture? must we puncture? must you puncture? must they puncture?	must I be puncturing? must you be puncturing? must he be puncturing? must we be puncturing? must you be puncturing? must they be puncturing?
Perfect	V-ing perfect
must I have punctured? must you have punctured? must he have punctured? must we have punctured? must you have punctured? must they have punctured?	must I have been puncturing? must you have been puncturing? must he have been puncturing? must we have been puncturing? must you have been puncturing? must they have been puncturing?

Interro-negative form

Simple form	V-ing form
mustn't I puncture? mustn't you puncture? mustn't he puncture? mustn't we puncture? mustn't you puncture? mustn't they puncture?	mustn't I be puncturing? mustn't you be puncturing? mustn't he be puncturing? mustn't we be puncturing? mustn't you be puncturing? mustn't they be puncturing?
Perfect	V-ing perfect
mustn't I have punctured? mustn't you have punctured? mustn't he have punctured? mustn't we have punctured? mustn't you have punctured? mustn't they have punctured?	mustn't I have been puncturing? mustn't you have been puncturing? mustn't he have been puncturing? mustn't we have been puncturing? mustn't you have been puncturing? mustn't they have been puncturing?