English verb conjugation
COULD SUBSPECIALIZE

Regular verb: subspecialize - subspecialized - subspecialized

Affirmation

Simple form	V-ing form
I could subspecialize you could subspecialize he could subspecialize we could subspecialize you could subspecialize they could subspecialize	I could be subspecializing you could be subspecializing he could be subspecializing we could be subspecializing you could be subspecializing they could be subspecializing
Perfect	V-ing perfect
I could have subspecialized you could have subspecialized he could have subspecialized we could have subspecialized you could have subspecialized they could have subspecialized	I could have been subspecializing you could have been subspecializing he could have been subspecializing we could have been subspecializing you could have been subspecializing they could have been subspecializing

Negation

Simple form	V-ing form
I could not subspecialize you could not subspecialize he could not subspecialize we could not subspecialize you could not subspecialize they could not subspecialize	I could not be subspecializing you could not be subspecializing he could not be subspecializing we could not be subspecializing you could not be subspecializing they could not be subspecializing
Perfect	V-ing perfect
I could not have subspecialized you could not have subspecialized he could not have subspecialized we could not have subspecialized you could not have subspecialized they could not have subspecialized	I could not have been subspecializing you could not have been subspecializing he could not have been subspecializing we could not have been subspecializing you could not have been subspecializing they could not have been subspecializing

Interrogative form

Simple form	V-ing form
could I subspecialize? could you subspecialize? could he subspecialize? could we subspecialize? could you subspecialize? could they subspecialize?	could I be subspecializing? could you be subspecializing? could he be subspecializing? could we be subspecializing? could you be subspecializing? could they be subspecializing?
Perfect	V-ing perfect
could I have subspecialized? could you have subspecialized? could he have subspecialized? could we have subspecialized? could you have subspecialized? could they have subspecialized?	could I have been subspecializing? could you have been subspecializing? could he have been subspecializing? could we have been subspecializing? could you have been subspecializing? could they have been subspecializing?

Interro-negative form

Simple form	V-ing form
could I not subspecialize? could you not subspecialize? could he not subspecialize? could we not subspecialize? could you not subspecialize? could they not subspecialize?	could I not be subspecializing? could you not be subspecializing? could he not be subspecializing? could we not be subspecializing? could you not be subspecializing? could they not be subspecializing?
Perfect	V-ing perfect
could I not have subspecialized? could you not have subspecialized? could he not have subspecialized? could we not have subspecialized? could you not have subspecialized? could they not have subspecialized?	could I not have been subspecializing? could you not have been subspecializing? could he not have been subspecializing? could we not have been subspecializing? could you not have been subspecializing? could they not have been subspecializing?