English verb conjugation
COULD INFORM

Regular verb: inform - informed - informed

Affirmation

Simple form	V-ing form
I could inform you could inform he could inform we could inform you could inform they could inform	I could be informing you could be informing he could be informing we could be informing you could be informing they could be informing
Perfect	V-ing perfect
I could have informed you could have informed he could have informed we could have informed you could have informed they could have informed	I could have been informing you could have been informing he could have been informing we could have been informing you could have been informing they could have been informing

Negation

Simple form	V-ing form
I could not inform you could not inform he could not inform we could not inform you could not inform they could not inform	I could not be informing you could not be informing he could not be informing we could not be informing you could not be informing they could not be informing
Perfect	V-ing perfect
I could not have informed you could not have informed he could not have informed we could not have informed you could not have informed they could not have informed	I could not have been informing you could not have been informing he could not have been informing we could not have been informing you could not have been informing they could not have been informing

Interrogative form

Simple form	V-ing form
could I inform? could you inform? could he inform? could we inform? could you inform? could they inform?	could I be informing? could you be informing? could he be informing? could we be informing? could you be informing? could they be informing?
Perfect	V-ing perfect
could I have informed? could you have informed? could he have informed? could we have informed? could you have informed? could they have informed?	could I have been informing? could you have been informing? could he have been informing? could we have been informing? could you have been informing? could they have been informing?

Interro-negative form

Simple form	V-ing form
could I not inform? could you not inform? could he not inform? could we not inform? could you not inform? could they not inform?	could I not be informing? could you not be informing? could he not be informing? could we not be informing? could you not be informing? could they not be informing?
Perfect	V-ing perfect
could I not have informed? could you not have informed? could he not have informed? could we not have informed? could you not have informed? could they not have informed?	could I not have been informing? could you not have been informing? could he not have been informing? could we not have been informing? could you not have been informing? could they not have been informing?