English verb conjugation
MUST SIGNIFY

Regular verb: signify - signified - signified

Affirmation

Simple form	V-ing form
I must signify you must signify he must signify we must signify you must signify they must signify	I must be signifying you must be signifying he must be signifying we must be signifying you must be signifying they must be signifying
Perfect	V-ing perfect
I must have signified you must have signified he must have signified we must have signified you must have signified they must have signified	I must have been signifying you must have been signifying he must have been signifying we must have been signifying you must have been signifying they must have been signifying

Negation

Simple form	V-ing form
I mustn't signify you mustn't signify he mustn't signify we mustn't signify you mustn't signify they mustn't signify	I mustn't be signifying you mustn't be signifying he mustn't be signifying we mustn't be signifying you mustn't be signifying they mustn't be signifying
Perfect	V-ing perfect
I mustn't have signified you mustn't have signified he mustn't have signified we mustn't have signified you mustn't have signified they mustn't have signified	I mustn't have been signifying you mustn't have been signifying he mustn't have been signifying we mustn't have been signifying you mustn't have been signifying they mustn't have been signifying

Interrogative form

Simple form	V-ing form
must I signify? must you signify? must he signify? must we signify? must you signify? must they signify?	must I be signifying? must you be signifying? must he be signifying? must we be signifying? must you be signifying? must they be signifying?
Perfect	V-ing perfect
must I have signified? must you have signified? must he have signified? must we have signified? must you have signified? must they have signified?	must I have been signifying? must you have been signifying? must he have been signifying? must we have been signifying? must you have been signifying? must they have been signifying?

Interro-negative form

Simple form	V-ing form
mustn't I signify? mustn't you signify? mustn't he signify? mustn't we signify? mustn't you signify? mustn't they signify?	mustn't I be signifying? mustn't you be signifying? mustn't he be signifying? mustn't we be signifying? mustn't you be signifying? mustn't they be signifying?
Perfect	V-ing perfect
mustn't I have signified? mustn't you have signified? mustn't he have signified? mustn't we have signified? mustn't you have signified? mustn't they have signified?	mustn't I have been signifying? mustn't you have been signifying? mustn't he have been signifying? mustn't we have been signifying? mustn't you have been signifying? mustn't they have been signifying?