English verb conjugation
COULD DECOUPLE

Regular verb: decouple - decoupled - decoupled

Affirmation

Simple form	V-ing form
I could decouple you could decouple he could decouple we could decouple you could decouple they could decouple	I could be decoupling you could be decoupling he could be decoupling we could be decoupling you could be decoupling they could be decoupling
Perfect	V-ing perfect
I could have decoupled you could have decoupled he could have decoupled we could have decoupled you could have decoupled they could have decoupled	I could have been decoupling you could have been decoupling he could have been decoupling we could have been decoupling you could have been decoupling they could have been decoupling

Negation

Simple form	V-ing form
I could not decouple you could not decouple he could not decouple we could not decouple you could not decouple they could not decouple	I could not be decoupling you could not be decoupling he could not be decoupling we could not be decoupling you could not be decoupling they could not be decoupling
Perfect	V-ing perfect
I could not have decoupled you could not have decoupled he could not have decoupled we could not have decoupled you could not have decoupled they could not have decoupled	I could not have been decoupling you could not have been decoupling he could not have been decoupling we could not have been decoupling you could not have been decoupling they could not have been decoupling

Interrogative form

Simple form	V-ing form
could I decouple? could you decouple? could he decouple? could we decouple? could you decouple? could they decouple?	could I be decoupling? could you be decoupling? could he be decoupling? could we be decoupling? could you be decoupling? could they be decoupling?
Perfect	V-ing perfect
could I have decoupled? could you have decoupled? could he have decoupled? could we have decoupled? could you have decoupled? could they have decoupled?	could I have been decoupling? could you have been decoupling? could he have been decoupling? could we have been decoupling? could you have been decoupling? could they have been decoupling?

Interro-negative form

Simple form	V-ing form
could I not decouple? could you not decouple? could he not decouple? could we not decouple? could you not decouple? could they not decouple?	could I not be decoupling? could you not be decoupling? could he not be decoupling? could we not be decoupling? could you not be decoupling? could they not be decoupling?
Perfect	V-ing perfect
could I not have decoupled? could you not have decoupled? could he not have decoupled? could we not have decoupled? could you not have decoupled? could they not have decoupled?	could I not have been decoupling? could you not have been decoupling? could he not have been decoupling? could we not have been decoupling? could you not have been decoupling? could they not have been decoupling?