English verb conjugation
MUST OVERSTAY

Regular verb: overstay - overstayed - overstayed

Affirmation

Simple form	V-ing form
I must overstay you must overstay he must overstay we must overstay you must overstay they must overstay	I must be overstaying you must be overstaying he must be overstaying we must be overstaying you must be overstaying they must be overstaying
Perfect	V-ing perfect
I must have overstayed you must have overstayed he must have overstayed we must have overstayed you must have overstayed they must have overstayed	I must have been overstaying you must have been overstaying he must have been overstaying we must have been overstaying you must have been overstaying they must have been overstaying

Negation

Simple form	V-ing form
I mustn't overstay you mustn't overstay he mustn't overstay we mustn't overstay you mustn't overstay they mustn't overstay	I mustn't be overstaying you mustn't be overstaying he mustn't be overstaying we mustn't be overstaying you mustn't be overstaying they mustn't be overstaying
Perfect	V-ing perfect
I mustn't have overstayed you mustn't have overstayed he mustn't have overstayed we mustn't have overstayed you mustn't have overstayed they mustn't have overstayed	I mustn't have been overstaying you mustn't have been overstaying he mustn't have been overstaying we mustn't have been overstaying you mustn't have been overstaying they mustn't have been overstaying

Interrogative form

Simple form	V-ing form
must I overstay? must you overstay? must he overstay? must we overstay? must you overstay? must they overstay?	must I be overstaying? must you be overstaying? must he be overstaying? must we be overstaying? must you be overstaying? must they be overstaying?
Perfect	V-ing perfect
must I have overstayed? must you have overstayed? must he have overstayed? must we have overstayed? must you have overstayed? must they have overstayed?	must I have been overstaying? must you have been overstaying? must he have been overstaying? must we have been overstaying? must you have been overstaying? must they have been overstaying?

Interro-negative form

Simple form	V-ing form
mustn't I overstay? mustn't you overstay? mustn't he overstay? mustn't we overstay? mustn't you overstay? mustn't they overstay?	mustn't I be overstaying? mustn't you be overstaying? mustn't he be overstaying? mustn't we be overstaying? mustn't you be overstaying? mustn't they be overstaying?
Perfect	V-ing perfect
mustn't I have overstayed? mustn't you have overstayed? mustn't he have overstayed? mustn't we have overstayed? mustn't you have overstayed? mustn't they have overstayed?	mustn't I have been overstaying? mustn't you have been overstaying? mustn't he have been overstaying? mustn't we have been overstaying? mustn't you have been overstaying? mustn't they have been overstaying?