English verb conjugation
CAN NULLIFY

Regular verb: nullify - nullified - nullified

Affirmation

Simple form	V-ing form
I can nullify you can nullify he can nullify we can nullify you can nullify they can nullify	I can be nullifying you can be nullifying he can be nullifying we can be nullifying you can be nullifying they can be nullifying
Perfect	V-ing perfect
I can have nullified you can have nullified he can have nullified we can have nullified you can have nullified they can have nullified	I can have been nullifying you can have been nullifying he can have been nullifying we can have been nullifying you can have been nullifying they can have been nullifying

Negation

Simple form	V-ing form
I cannot nullify you cannot nullify he cannot nullify we cannot nullify you cannot nullify they cannot nullify	I cannot be nullifying you cannot be nullifying he cannot be nullifying we cannot be nullifying you cannot be nullifying they cannot be nullifying
Perfect	V-ing perfect
I cannot have nullified you cannot have nullified he cannot have nullified we cannot have nullified you cannot have nullified they cannot have nullified	I cannot have been nullifying you cannot have been nullifying he cannot have been nullifying we cannot have been nullifying you cannot have been nullifying they cannot have been nullifying

Interrogative form

Simple form	V-ing form
can I nullify? can you nullify? can he nullify? can we nullify? can you nullify? can they nullify?	can I be nullifying? can you be nullifying? can he be nullifying? can we be nullifying? can you be nullifying? can they be nullifying?
Perfect	V-ing perfect
can I have nullified? can you have nullified? can he have nullified? can we have nullified? can you have nullified? can they have nullified?	can I have been nullifying? can you have been nullifying? can he have been nullifying? can we have been nullifying? can you have been nullifying? can they have been nullifying?

Interro-negative form

Simple form	V-ing form
can I not nullify? can you not nullify? can he not nullify? can we not nullify? can you not nullify? can they not nullify?	can I not be nullifying? can you not be nullifying? can he not be nullifying? can we not be nullifying? can you not be nullifying? can they not be nullifying?
Perfect	V-ing perfect
can I not have nullified? can you not have nullified? can he not have nullified? can we not have nullified? can you not have nullified? can they not have nullified?	can I not have been nullifying? can you not have been nullifying? can he not have been nullifying? can we not have been nullifying? can you not have been nullifying? can they not have been nullifying?