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 mustn't nitrify you mustn't nitrify she mustn't nitrify we mustn't nitrify you mustn't nitrify they mustn't nitrify	I mustn't be nitrifying you mustn't be nitrifying she mustn't be nitrifying we mustn't be nitrifying you mustn't be nitrifying they mustn't be nitrifying
Perfect	V-ing perfect
I mustn't have nitrified you mustn't have nitrified she mustn't have nitrified we mustn't have nitrified you mustn't have nitrified they mustn't have nitrified	I mustn't have been nitrifying you mustn't have been nitrifying she mustn't have been nitrifying we mustn't have been nitrifying you mustn't have been nitrifying they mustn't 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
mustn't I nitrify? mustn't you nitrify? mustn't she nitrify? mustn't we nitrify? mustn't you nitrify? mustn't they nitrify?	mustn't I be nitrifying? mustn't you be nitrifying? mustn't she be nitrifying? mustn't we be nitrifying? mustn't you be nitrifying? mustn't they be nitrifying?
Perfect	V-ing perfect
mustn't I have nitrified? mustn't you have nitrified? mustn't she have nitrified? mustn't we have nitrified? mustn't you have nitrified? mustn't they have nitrified?	mustn't I have been nitrifying? mustn't you have been nitrifying? mustn't she have been nitrifying? mustn't we have been nitrifying? mustn't you have been nitrifying? mustn't they have been nitrifying?