English verb conjugation
MUST UNMASK

Regular verb: unmask - unmasked - unmasked

Affirmation

Simple form	V-ing form
I must unmask you must unmask he must unmask we must unmask you must unmask they must unmask	I must be unmasking you must be unmasking he must be unmasking we must be unmasking you must be unmasking they must be unmasking
Perfect	V-ing perfect
I must have unmasked you must have unmasked he must have unmasked we must have unmasked you must have unmasked they must have unmasked	I must have been unmasking you must have been unmasking he must have been unmasking we must have been unmasking you must have been unmasking they must have been unmasking

Negation

Simple form	V-ing form
I mustn't unmask you mustn't unmask he mustn't unmask we mustn't unmask you mustn't unmask they mustn't unmask	I mustn't be unmasking you mustn't be unmasking he mustn't be unmasking we mustn't be unmasking you mustn't be unmasking they mustn't be unmasking
Perfect	V-ing perfect
I mustn't have unmasked you mustn't have unmasked he mustn't have unmasked we mustn't have unmasked you mustn't have unmasked they mustn't have unmasked	I mustn't have been unmasking you mustn't have been unmasking he mustn't have been unmasking we mustn't have been unmasking you mustn't have been unmasking they mustn't have been unmasking

Interrogative form

Simple form	V-ing form
must I unmask? must you unmask? must he unmask? must we unmask? must you unmask? must they unmask?	must I be unmasking? must you be unmasking? must he be unmasking? must we be unmasking? must you be unmasking? must they be unmasking?
Perfect	V-ing perfect
must I have unmasked? must you have unmasked? must he have unmasked? must we have unmasked? must you have unmasked? must they have unmasked?	must I have been unmasking? must you have been unmasking? must he have been unmasking? must we have been unmasking? must you have been unmasking? must they have been unmasking?

Interro-negative form

Simple form	V-ing form
mustn't I unmask? mustn't you unmask? mustn't he unmask? mustn't we unmask? mustn't you unmask? mustn't they unmask?	mustn't I be unmasking? mustn't you be unmasking? mustn't he be unmasking? mustn't we be unmasking? mustn't you be unmasking? mustn't they be unmasking?
Perfect	V-ing perfect
mustn't I have unmasked? mustn't you have unmasked? mustn't he have unmasked? mustn't we have unmasked? mustn't you have unmasked? mustn't they have unmasked?	mustn't I have been unmasking? mustn't you have been unmasking? mustn't he have been unmasking? mustn't we have been unmasking? mustn't you have been unmasking? mustn't they have been unmasking?