English verb conjugation
COULD PARASITIZE

Regular verb: parasitize - parasitized - parasitized

Affirmation

Simple form	V-ing form
I could parasitize you could parasitize she could parasitize we could parasitize you could parasitize they could parasitize	I could be parasitizing you could be parasitizing she could be parasitizing we could be parasitizing you could be parasitizing they could be parasitizing
Perfect	V-ing perfect
I could have parasitized you could have parasitized she could have parasitized we could have parasitized you could have parasitized they could have parasitized	I could have been parasitizing you could have been parasitizing she could have been parasitizing we could have been parasitizing you could have been parasitizing they could have been parasitizing

Negation

Simple form	V-ing form
I couldn't parasitize you couldn't parasitize she couldn't parasitize we couldn't parasitize you couldn't parasitize they couldn't parasitize	I couldn't be parasitizing you couldn't be parasitizing she couldn't be parasitizing we couldn't be parasitizing you couldn't be parasitizing they couldn't be parasitizing
Perfect	V-ing perfect
I couldn't have parasitized you couldn't have parasitized she couldn't have parasitized we couldn't have parasitized you couldn't have parasitized they couldn't have parasitized	I couldn't have been parasitizing you couldn't have been parasitizing she couldn't have been parasitizing we couldn't have been parasitizing you couldn't have been parasitizing they couldn't have been parasitizing

Interrogative form

Simple form	V-ing form
could I parasitize? could you parasitize? could she parasitize? could we parasitize? could you parasitize? could they parasitize?	could I be parasitizing? could you be parasitizing? could she be parasitizing? could we be parasitizing? could you be parasitizing? could they be parasitizing?
Perfect	V-ing perfect
could I have parasitized? could you have parasitized? could she have parasitized? could we have parasitized? could you have parasitized? could they have parasitized?	could I have been parasitizing? could you have been parasitizing? could she have been parasitizing? could we have been parasitizing? could you have been parasitizing? could they have been parasitizing?

Interro-negative form

Simple form	V-ing form
couldn't I parasitize? couldn't you parasitize? couldn't she parasitize? couldn't we parasitize? couldn't you parasitize? couldn't they parasitize?	couldn't I be parasitizing? couldn't you be parasitizing? couldn't she be parasitizing? couldn't we be parasitizing? couldn't you be parasitizing? couldn't they be parasitizing?
Perfect	V-ing perfect
couldn't I have parasitized? couldn't you have parasitized? couldn't she have parasitized? couldn't we have parasitized? couldn't you have parasitized? couldn't they have parasitized?	couldn't I have been parasitizing? couldn't you have been parasitizing? couldn't she have been parasitizing? couldn't we have been parasitizing? couldn't you have been parasitizing? couldn't they have been parasitizing?