English verb conjugation
CAN SIGNIFY

Regular verb: signify - signified - signified

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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