English verb conjugation
MUST INVOKE

Regular verb: invoke - invoked - invoked

Affirmation

Simple form	V-ing form
I must invoke you must invoke he must invoke we must invoke you must invoke they must invoke	I must be invoking you must be invoking he must be invoking we must be invoking you must be invoking they must be invoking
Perfect	V-ing perfect
I must have invoked you must have invoked he must have invoked we must have invoked you must have invoked they must have invoked	I must have been invoking you must have been invoking he must have been invoking we must have been invoking you must have been invoking they must have been invoking

Negation

Simple form	V-ing form
I mustn't invoke you mustn't invoke he mustn't invoke we mustn't invoke you mustn't invoke they mustn't invoke	I mustn't be invoking you mustn't be invoking he mustn't be invoking we mustn't be invoking you mustn't be invoking they mustn't be invoking
Perfect	V-ing perfect
I mustn't have invoked you mustn't have invoked he mustn't have invoked we mustn't have invoked you mustn't have invoked they mustn't have invoked	I mustn't have been invoking you mustn't have been invoking he mustn't have been invoking we mustn't have been invoking you mustn't have been invoking they mustn't have been invoking

Interrogative form

Simple form	V-ing form
must I invoke? must you invoke? must he invoke? must we invoke? must you invoke? must they invoke?	must I be invoking? must you be invoking? must he be invoking? must we be invoking? must you be invoking? must they be invoking?
Perfect	V-ing perfect
must I have invoked? must you have invoked? must he have invoked? must we have invoked? must you have invoked? must they have invoked?	must I have been invoking? must you have been invoking? must he have been invoking? must we have been invoking? must you have been invoking? must they have been invoking?

Interro-negative form

Simple form	V-ing form
mustn't I invoke? mustn't you invoke? mustn't he invoke? mustn't we invoke? mustn't you invoke? mustn't they invoke?	mustn't I be invoking? mustn't you be invoking? mustn't he be invoking? mustn't we be invoking? mustn't you be invoking? mustn't they be invoking?
Perfect	V-ing perfect
mustn't I have invoked? mustn't you have invoked? mustn't he have invoked? mustn't we have invoked? mustn't you have invoked? mustn't they have invoked?	mustn't I have been invoking? mustn't you have been invoking? mustn't he have been invoking? mustn't we have been invoking? mustn't you have been invoking? mustn't they have been invoking?