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 can't nullify you can't nullify she can't nullify we can't nullify you can't nullify they can't nullify	I can't be nullifying you can't be nullifying she can't be nullifying we can't be nullifying you can't be nullifying they can't be nullifying
Perfect	V-ing perfect
I can't have nullified you can't have nullified she can't have nullified we can't have nullified you can't have nullified they can't have nullified	I can't have been nullifying you can't have been nullifying she can't have been nullifying we can't have been nullifying you can't have been nullifying they can't 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't I nullify? can't you nullify? can't she nullify? can't we nullify? can't you nullify? can't they nullify?	can't I be nullifying? can't you be nullifying? can't she be nullifying? can't we be nullifying? can't you be nullifying? can't they be nullifying?
Perfect	V-ing perfect
can't I have nullified? can't you have nullified? can't she have nullified? can't we have nullified? can't you have nullified? can't they have nullified?	can't I have been nullifying? can't you have been nullifying? can't she have been nullifying? can't we have been nullifying? can't you have been nullifying? can't they have been nullifying?