English verb conjugation
COULD COLLIDE

Regular verb: collide - collided - collided

Affirmation

Simple form	V-ing form
I could collide you could collide he could collide we could collide you could collide they could collide	I could be colliding you could be colliding he could be colliding we could be colliding you could be colliding they could be colliding
Perfect	V-ing perfect
I could have collided you could have collided he could have collided we could have collided you could have collided they could have collided	I could have been colliding you could have been colliding he could have been colliding we could have been colliding you could have been colliding they could have been colliding

Negation

Simple form	V-ing form
I couldn't collide you couldn't collide he couldn't collide we couldn't collide you couldn't collide they couldn't collide	I couldn't be colliding you couldn't be colliding he couldn't be colliding we couldn't be colliding you couldn't be colliding they couldn't be colliding
Perfect	V-ing perfect
I couldn't have collided you couldn't have collided he couldn't have collided we couldn't have collided you couldn't have collided they couldn't have collided	I couldn't have been colliding you couldn't have been colliding he couldn't have been colliding we couldn't have been colliding you couldn't have been colliding they couldn't have been colliding

Interrogative form

Simple form	V-ing form
could I collide? could you collide? could he collide? could we collide? could you collide? could they collide?	could I be colliding? could you be colliding? could he be colliding? could we be colliding? could you be colliding? could they be colliding?
Perfect	V-ing perfect
could I have collided? could you have collided? could he have collided? could we have collided? could you have collided? could they have collided?	could I have been colliding? could you have been colliding? could he have been colliding? could we have been colliding? could you have been colliding? could they have been colliding?

Interro-negative form

Simple form	V-ing form
couldn't I collide? couldn't you collide? couldn't he collide? couldn't we collide? couldn't you collide? couldn't they collide?	couldn't I be colliding? couldn't you be colliding? couldn't he be colliding? couldn't we be colliding? couldn't you be colliding? couldn't they be colliding?
Perfect	V-ing perfect
couldn't I have collided? couldn't you have collided? couldn't he have collided? couldn't we have collided? couldn't you have collided? couldn't they have collided?	couldn't I have been colliding? couldn't you have been colliding? couldn't he have been colliding? couldn't we have been colliding? couldn't you have been colliding? couldn't they have been colliding?