English verb conjugation
CAN NULLIFY

Regular verb: nullify - nullified - nullified

Affirmation

Simple form	V-ing form
I can nullify you can nullify she can nullify we can nullify you can nullify they can nullify	I can be nullifying you can be nullifying she 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 she 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 she 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 she cannot nullify we cannot nullify you cannot nullify they cannot nullify	I cannot be nullifying you cannot be nullifying she 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 she 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 she 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 she nullify? can we nullify? can you nullify? can they nullify?	can I be nullifying? can you be nullifying? can she 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 she 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 she 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 she 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 she 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 she 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 she not have been nullifying? can we not have been nullifying? can you not have been nullifying? can they not have been nullifying?