English verb conjugation
MUST NULLIFY

Regular verb: nullify - nullified - nullified

Affirmation

Simple form	V-ing form
I must nullify you must nullify she must nullify we must nullify you must nullify they must nullify	I must be nullifying you must be nullifying she 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 she 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 she 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 must not nullify you must not nullify she must not nullify we must not nullify you must not nullify they must not nullify	I must not be nullifying you must not be nullifying she must not be nullifying we must not be nullifying you must not be nullifying they must not be nullifying
Perfect	V-ing perfect
I must not have nullified you must not have nullified she must not have nullified we must not have nullified you must not have nullified they must not have nullified	I must not have been nullifying you must not have been nullifying she must not have been nullifying we must not have been nullifying you must not have been nullifying they must not have been nullifying

Interrogative form

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