English verb conjugation
MUST PUNCTURE

Regular verb: puncture - punctured - punctured

Affirmation

Simple form	V-ing form
I must puncture you must puncture she must puncture we must puncture you must puncture they must puncture	I must be puncturing you must be puncturing she 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 she 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 she 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 must not puncture you must not puncture she must not puncture we must not puncture you must not puncture they must not puncture	I must not be puncturing you must not be puncturing she must not be puncturing we must not be puncturing you must not be puncturing they must not be puncturing
Perfect	V-ing perfect
I must not have punctured you must not have punctured she must not have punctured we must not have punctured you must not have punctured they must not have punctured	I must not have been puncturing you must not have been puncturing she must not have been puncturing we must not have been puncturing you must not have been puncturing they must not have been puncturing

Interrogative form

Simple form	V-ing form
must I puncture? must you puncture? must she puncture? must we puncture? must you puncture? must they puncture?	must I be puncturing? must you be puncturing? must she 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 she 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 she 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
must I not puncture? must you not puncture? must she not puncture? must we not puncture? must you not puncture? must they not puncture?	must I not be puncturing? must you not be puncturing? must she not be puncturing? must we not be puncturing? must you not be puncturing? must they not be puncturing?
Perfect	V-ing perfect
must I not have punctured? must you not have punctured? must she not have punctured? must we not have punctured? must you not have punctured? must they not have punctured?	must I not have been puncturing? must you not have been puncturing? must she not have been puncturing? must we not have been puncturing? must you not have been puncturing? must they not have been puncturing?