I could formularize you could formularize she could formularize we could formularize you could formularize they could formularize
V-ing form
I could be formularizing you could be formularizing she could be formularizing we could be formularizing you could be formularizing they could be formularizing
Perfect
I could have formularized you could have formularized she could have formularized we could have formularized you could have formularized they could have formularized
V-ing perfect
I could have been formularizing you could have been formularizing she could have been formularizing we could have been formularizing you could have been formularizing they could have been formularizing
Negation
Simple form
I could not formularize you could not formularize she could not formularize we could not formularize you could not formularize they could not formularize
V-ing form
I could not be formularizing you could not be formularizing she could not be formularizing we could not be formularizing you could not be formularizing they could not be formularizing
Perfect
I could not have formularized you could not have formularized she could not have formularized we could not have formularized you could not have formularized they could not have formularized
V-ing perfect
I could not have been formularizing you could not have been formularizing she could not have been formularizing we could not have been formularizing you could not have been formularizing they could not have been formularizing
Interrogative form
Simple form
could I formularize? could you formularize? could she formularize? could we formularize? could you formularize? could they formularize?
V-ing form
could I be formularizing? could you be formularizing? could she be formularizing? could we be formularizing? could you be formularizing? could they be formularizing?
Perfect
could I have formularized? could you have formularized? could she have formularized? could we have formularized? could you have formularized? could they have formularized?
V-ing perfect
could I have been formularizing? could you have been formularizing? could she have been formularizing? could we have been formularizing? could you have been formularizing? could they have been formularizing?
Interro-negative form
Simple form
could I not formularize? could you not formularize? could she not formularize? could we not formularize? could you not formularize? could they not formularize?
V-ing form
could I not be formularizing? could you not be formularizing? could she not be formularizing? could we not be formularizing? could you not be formularizing? could they not be formularizing?
Perfect
could I not have formularized? could you not have formularized? could she not have formularized? could we not have formularized? could you not have formularized? could they not have formularized?
V-ing perfect
could I not have been formularizing? could you not have been formularizing? could she not have been formularizing? could we not have been formularizing? could you not have been formularizing? could they not have been formularizing?