English verb conjugation
COULD PARAMETERIZE

Regular verb: parameterize - parameterized - parameterized

Affirmation

Simple form	V-ing form
I could parameterize you could parameterize he could parameterize we could parameterize you could parameterize they could parameterize	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	V-ing 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	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	V-ing 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	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	V-ing 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	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	V-ing form
could I parameterize? could you parameterize? could he parameterize? could we parameterize? could you parameterize? could they parameterize?	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	V-ing 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?	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	V-ing 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?	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	V-ing 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?	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?