English verb conjugation
COULD UPDATE

Regular verb: update - updated - updated

Affirmation

Simple form	V-ing form
I could update you could update she could update we could update you could update they could update	I could be updating you could be updating she could be updating we could be updating you could be updating they could be updating
Perfect	V-ing perfect
I could have updated you could have updated she could have updated we could have updated you could have updated they could have updated	I could have been updating you could have been updating she could have been updating we could have been updating you could have been updating they could have been updating

Negation

Simple form	V-ing form
I could not update you could not update she could not update we could not update you could not update they could not update	I could not be updating you could not be updating she could not be updating we could not be updating you could not be updating they could not be updating
Perfect	V-ing perfect
I could not have updated you could not have updated she could not have updated we could not have updated you could not have updated they could not have updated	I could not have been updating you could not have been updating she could not have been updating we could not have been updating you could not have been updating they could not have been updating

Interrogative form

Simple form	V-ing form
could I update? could you update? could she update? could we update? could you update? could they update?	could I be updating? could you be updating? could she be updating? could we be updating? could you be updating? could they be updating?
Perfect	V-ing perfect
could I have updated? could you have updated? could she have updated? could we have updated? could you have updated? could they have updated?	could I have been updating? could you have been updating? could she have been updating? could we have been updating? could you have been updating? could they have been updating?

Interro-negative form

Simple form	V-ing form
could I not update? could you not update? could she not update? could we not update? could you not update? could they not update?	could I not be updating? could you not be updating? could she not be updating? could we not be updating? could you not be updating? could they not be updating?
Perfect	V-ing perfect
could I not have updated? could you not have updated? could she not have updated? could we not have updated? could you not have updated? could they not have updated?	could I not have been updating? could you not have been updating? could she not have been updating? could we not have been updating? could you not have been updating? could they not have been updating?