English verb conjugation
MUST NULLIFY

Regular verb: nullify - nullified - nullified

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I nullify? mustn't you nullify? mustn't he nullify? mustn't we nullify? mustn't you nullify? mustn't they nullify?	mustn't I be nullifying? mustn't you be nullifying? mustn't he be nullifying? mustn't we be nullifying? mustn't you be nullifying? mustn't they be nullifying?
Perfect	V-ing perfect
mustn't I have nullified? mustn't you have nullified? mustn't he have nullified? mustn't we have nullified? mustn't you have nullified? mustn't they have nullified?	mustn't I have been nullifying? mustn't you have been nullifying? mustn't he have been nullifying? mustn't we have been nullifying? mustn't you have been nullifying? mustn't they have been nullifying?