English verb conjugation
MUST NITRIFY

Regular verb: nitrify - nitrified - nitrified

Affirmation

Simple form	V-ing form
I must nitrify you must nitrify she must nitrify we must nitrify you must nitrify they must nitrify	I must be nitrifying you must be nitrifying she must be nitrifying we must be nitrifying you must be nitrifying they must be nitrifying
Perfect	V-ing perfect
I must have nitrified you must have nitrified she must have nitrified we must have nitrified you must have nitrified they must have nitrified	I must have been nitrifying you must have been nitrifying she must have been nitrifying we must have been nitrifying you must have been nitrifying they must have been nitrifying

Negation

Simple form	V-ing form
I must not nitrify you must not nitrify she must not nitrify we must not nitrify you must not nitrify they must not nitrify	I must not be nitrifying you must not be nitrifying she must not be nitrifying we must not be nitrifying you must not be nitrifying they must not be nitrifying
Perfect	V-ing perfect
I must not have nitrified you must not have nitrified she must not have nitrified we must not have nitrified you must not have nitrified they must not have nitrified	I must not have been nitrifying you must not have been nitrifying she must not have been nitrifying we must not have been nitrifying you must not have been nitrifying they must not have been nitrifying

Interrogative form

Simple form	V-ing form
must I nitrify? must you nitrify? must she nitrify? must we nitrify? must you nitrify? must they nitrify?	must I be nitrifying? must you be nitrifying? must she be nitrifying? must we be nitrifying? must you be nitrifying? must they be nitrifying?
Perfect	V-ing perfect
must I have nitrified? must you have nitrified? must she have nitrified? must we have nitrified? must you have nitrified? must they have nitrified?	must I have been nitrifying? must you have been nitrifying? must she have been nitrifying? must we have been nitrifying? must you have been nitrifying? must they have been nitrifying?

Interro-negative form

Simple form	V-ing form
must I not nitrify? must you not nitrify? must she not nitrify? must we not nitrify? must you not nitrify? must they not nitrify?	must I not be nitrifying? must you not be nitrifying? must she not be nitrifying? must we not be nitrifying? must you not be nitrifying? must they not be nitrifying?
Perfect	V-ing perfect
must I not have nitrified? must you not have nitrified? must she not have nitrified? must we not have nitrified? must you not have nitrified? must they not have nitrified?	must I not have been nitrifying? must you not have been nitrifying? must she not have been nitrifying? must we not have been nitrifying? must you not have been nitrifying? must they not have been nitrifying?