English verb conjugation
CAN INVOKE

Regular verb: invoke - invoked - invoked

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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