English verb conjugation
COULD EXTERIORIZE

Regular verb: exteriorize - exteriorized - exteriorized

Affirmation

Simple form	V-ing form
I could exteriorize you could exteriorize she could exteriorize we could exteriorize you could exteriorize they could exteriorize	I could be exteriorizing you could be exteriorizing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she exteriorize? could we exteriorize? could you exteriorize? could they exteriorize?	could I be exteriorizing? could you be exteriorizing? could she 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 she 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 she 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 she 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 she 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 she 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 she have been exteriorizing? couldn't we have been exteriorizing? couldn't you have been exteriorizing? couldn't they have been exteriorizing?