English verb conjugation
MUST PRESTAMP

Regular verb: prestamp - prestamped - prestamped

Affirmation

Simple form	V-ing form
I must prestamp you must prestamp he must prestamp we must prestamp you must prestamp they must prestamp	I must be prestamping you must be prestamping he must be prestamping we must be prestamping you must be prestamping they must be prestamping
Perfect	V-ing perfect
I must have prestamped you must have prestamped he must have prestamped we must have prestamped you must have prestamped they must have prestamped	I must have been prestamping you must have been prestamping he must have been prestamping we must have been prestamping you must have been prestamping they must have been prestamping

Negation

Simple form	V-ing form
I must not prestamp you must not prestamp he must not prestamp we must not prestamp you must not prestamp they must not prestamp	I must not be prestamping you must not be prestamping he must not be prestamping we must not be prestamping you must not be prestamping they must not be prestamping
Perfect	V-ing perfect
I must not have prestamped you must not have prestamped he must not have prestamped we must not have prestamped you must not have prestamped they must not have prestamped	I must not have been prestamping you must not have been prestamping he must not have been prestamping we must not have been prestamping you must not have been prestamping they must not have been prestamping

Interrogative form

Simple form	V-ing form
must I prestamp? must you prestamp? must he prestamp? must we prestamp? must you prestamp? must they prestamp?	must I be prestamping? must you be prestamping? must he be prestamping? must we be prestamping? must you be prestamping? must they be prestamping?
Perfect	V-ing perfect
must I have prestamped? must you have prestamped? must he have prestamped? must we have prestamped? must you have prestamped? must they have prestamped?	must I have been prestamping? must you have been prestamping? must he have been prestamping? must we have been prestamping? must you have been prestamping? must they have been prestamping?

Interro-negative form

Simple form	V-ing form
must I not prestamp? must you not prestamp? must he not prestamp? must we not prestamp? must you not prestamp? must they not prestamp?	must I not be prestamping? must you not be prestamping? must he not be prestamping? must we not be prestamping? must you not be prestamping? must they not be prestamping?
Perfect	V-ing perfect
must I not have prestamped? must you not have prestamped? must he not have prestamped? must we not have prestamped? must you not have prestamped? must they not have prestamped?	must I not have been prestamping? must you not have been prestamping? must he not have been prestamping? must we not have been prestamping? must you not have been prestamping? must they not have been prestamping?