I could parameterize you could parameterize he could parameterize we could parameterize you could parameterize they could parameterize
V-ing form
I could be parameterizing you could be parameterizing he could be parameterizing we could be parameterizing you could be parameterizing they could be parameterizing
Perfect
I could have parameterized you could have parameterized he could have parameterized we could have parameterized you could have parameterized they could have parameterized
V-ing perfect
I could have been parameterizing you could have been parameterizing he could have been parameterizing we could have been parameterizing you could have been parameterizing they could have been parameterizing
Negation
Simple form
I couldn't parameterize you couldn't parameterize he couldn't parameterize we couldn't parameterize you couldn't parameterize they couldn't parameterize
V-ing form
I couldn't be parameterizing you couldn't be parameterizing he couldn't be parameterizing we couldn't be parameterizing you couldn't be parameterizing they couldn't be parameterizing
Perfect
I couldn't have parameterized you couldn't have parameterized he couldn't have parameterized we couldn't have parameterized you couldn't have parameterized they couldn't have parameterized
V-ing perfect
I couldn't have been parameterizing you couldn't have been parameterizing he couldn't have been parameterizing we couldn't have been parameterizing you couldn't have been parameterizing they couldn't have been parameterizing
Interrogative form
Simple form
could I parameterize? could you parameterize? could he parameterize? could we parameterize? could you parameterize? could they parameterize?
V-ing form
could I be parameterizing? could you be parameterizing? could he be parameterizing? could we be parameterizing? could you be parameterizing? could they be parameterizing?
Perfect
could I have parameterized? could you have parameterized? could he have parameterized? could we have parameterized? could you have parameterized? could they have parameterized?
V-ing perfect
could I have been parameterizing? could you have been parameterizing? could he have been parameterizing? could we have been parameterizing? could you have been parameterizing? could they have been parameterizing?
Interro-negative form
Simple form
couldn't I parameterize? couldn't you parameterize? couldn't he parameterize? couldn't we parameterize? couldn't you parameterize? couldn't they parameterize?
V-ing form
couldn't I be parameterizing? couldn't you be parameterizing? couldn't he be parameterizing? couldn't we be parameterizing? couldn't you be parameterizing? couldn't they be parameterizing?
Perfect
couldn't I have parameterized? couldn't you have parameterized? couldn't he have parameterized? couldn't we have parameterized? couldn't you have parameterized? couldn't they have parameterized?
V-ing perfect
couldn't I have been parameterizing? couldn't you have been parameterizing? couldn't he have been parameterizing? couldn't we have been parameterizing? couldn't you have been parameterizing? couldn't they have been parameterizing?