English verb conjugation
COULD PARASITIZE

Regular verb: parasitize - parasitized - parasitized

Affirmation

Simple form	V-ing form
I could parasitize you could parasitize he could parasitize we could parasitize you could parasitize they could parasitize	I could be parasitizing you could be parasitizing he 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 he 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 he 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 he 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 he 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 he 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 he 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 he parasitize? could we parasitize? could you parasitize? could they parasitize?	could I be parasitizing? could you be parasitizing? could he 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 he 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 he 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 he 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 he 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 he 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 he have been parasitizing? couldn't we have been parasitizing? couldn't you have been parasitizing? couldn't they have been parasitizing?