English verb conjugation
COULD EXTERIORIZE

Regular verb: exteriorize - exteriorized - exteriorized

Affirmation

Simple form	V-ing form
I could exteriorize you could exteriorize he could exteriorize we could exteriorize you could exteriorize they could exteriorize	I could be exteriorizing you could be exteriorizing he could be exteriorizing we could be exteriorizing you could be exteriorizing they could be exteriorizing
Perfect	V-ing perfect
I could have exteriorized you could have exteriorized he could have exteriorized we could have exteriorized you could have exteriorized they could have exteriorized	I could have been exteriorizing you could have been exteriorizing he could have been exteriorizing we could have been exteriorizing you could have been exteriorizing they could have been exteriorizing

Negation

Simple form	V-ing form
I couldn't exteriorize you couldn't exteriorize he couldn't exteriorize we couldn't exteriorize you couldn't exteriorize they couldn't exteriorize	I couldn't be exteriorizing you couldn't be exteriorizing he couldn't be exteriorizing we couldn't be exteriorizing you couldn't be exteriorizing they couldn't be exteriorizing
Perfect	V-ing perfect
I couldn't have exteriorized you couldn't have exteriorized he couldn't have exteriorized we couldn't have exteriorized you couldn't have exteriorized they couldn't have exteriorized	I couldn't have been exteriorizing you couldn't have been exteriorizing he couldn't have been exteriorizing we couldn't have been exteriorizing you couldn't have been exteriorizing they couldn't have been exteriorizing

Interrogative form

Simple form	V-ing form
could I exteriorize? could you exteriorize? could he exteriorize? could we exteriorize? could you exteriorize? could they exteriorize?	could I be exteriorizing? could you be exteriorizing? could he be exteriorizing? could we be exteriorizing? could you be exteriorizing? could they be exteriorizing?
Perfect	V-ing perfect
could I have exteriorized? could you have exteriorized? could he have exteriorized? could we have exteriorized? could you have exteriorized? could they have exteriorized?	could I have been exteriorizing? could you have been exteriorizing? could he have been exteriorizing? could we have been exteriorizing? could you have been exteriorizing? could they have been exteriorizing?

Interro-negative form

Simple form	V-ing form
couldn't I exteriorize? couldn't you exteriorize? couldn't he exteriorize? couldn't we exteriorize? couldn't you exteriorize? couldn't they exteriorize?	couldn't I be exteriorizing? couldn't you be exteriorizing? couldn't he be exteriorizing? couldn't we be exteriorizing? couldn't you be exteriorizing? couldn't they be exteriorizing?
Perfect	V-ing perfect
couldn't I have exteriorized? couldn't you have exteriorized? couldn't he have exteriorized? couldn't we have exteriorized? couldn't you have exteriorized? couldn't they have exteriorized?	couldn't I have been exteriorizing? couldn't you have been exteriorizing? couldn't he have been exteriorizing? couldn't we have been exteriorizing? couldn't you have been exteriorizing? couldn't they have been exteriorizing?