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 must not signify you must not signify he must not signify we must not signify you must not signify they must not signify	I must not be signifying you must not be signifying he must not be signifying we must not be signifying you must not be signifying they must not be signifying
Perfect	V-ing perfect
I must not have signified you must not have signified he must not have signified we must not have signified you must not have signified they must not have signified	I must not have been signifying you must not have been signifying he must not have been signifying we must not have been signifying you must not have been signifying they must not 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
must I not signify? must you not signify? must he not signify? must we not signify? must you not signify? must they not signify?	must I not be signifying? must you not be signifying? must he not be signifying? must we not be signifying? must you not be signifying? must they not be signifying?
Perfect	V-ing perfect
must I not have signified? must you not have signified? must he not have signified? must we not have signified? must you not have signified? must they not have signified?	must I not have been signifying? must you not have been signifying? must he not have been signifying? must we not have been signifying? must you not have been signifying? must they not have been signifying?