English verb conjugation
COULD HIBERNATE

Regular verb: hibernate - hibernated - hibernated

Affirmation

Simple form	V-ing form
I could hibernate you could hibernate he could hibernate we could hibernate you could hibernate they could hibernate	I could be hibernating you could be hibernating he could be hibernating we could be hibernating you could be hibernating they could be hibernating
Perfect	V-ing perfect
I could have hibernated you could have hibernated he could have hibernated we could have hibernated you could have hibernated they could have hibernated	I could have been hibernating you could have been hibernating he could have been hibernating we could have been hibernating you could have been hibernating they could have been hibernating

Negation

Simple form	V-ing form
I could not hibernate you could not hibernate he could not hibernate we could not hibernate you could not hibernate they could not hibernate	I could not be hibernating you could not be hibernating he could not be hibernating we could not be hibernating you could not be hibernating they could not be hibernating
Perfect	V-ing perfect
I could not have hibernated you could not have hibernated he could not have hibernated we could not have hibernated you could not have hibernated they could not have hibernated	I could not have been hibernating you could not have been hibernating he could not have been hibernating we could not have been hibernating you could not have been hibernating they could not have been hibernating

Interrogative form

Simple form	V-ing form
could I hibernate? could you hibernate? could he hibernate? could we hibernate? could you hibernate? could they hibernate?	could I be hibernating? could you be hibernating? could he be hibernating? could we be hibernating? could you be hibernating? could they be hibernating?
Perfect	V-ing perfect
could I have hibernated? could you have hibernated? could he have hibernated? could we have hibernated? could you have hibernated? could they have hibernated?	could I have been hibernating? could you have been hibernating? could he have been hibernating? could we have been hibernating? could you have been hibernating? could they have been hibernating?

Interro-negative form

Simple form	V-ing form
could I not hibernate? could you not hibernate? could he not hibernate? could we not hibernate? could you not hibernate? could they not hibernate?	could I not be hibernating? could you not be hibernating? could he not be hibernating? could we not be hibernating? could you not be hibernating? could they not be hibernating?
Perfect	V-ing perfect
could I not have hibernated? could you not have hibernated? could he not have hibernated? could we not have hibernated? could you not have hibernated? could they not have hibernated?	could I not have been hibernating? could you not have been hibernating? could he not have been hibernating? could we not have been hibernating? could you not have been hibernating? could they not have been hibernating?