English verb conjugation
COULD BUMP

Regular verb: bump - bumped - bumped

Affirmation

Simple form	V-ing form
I could bump you could bump she could bump we could bump you could bump they could bump	I could be bumping you could be bumping she could be bumping we could be bumping you could be bumping they could be bumping
Perfect	V-ing perfect
I could have bumped you could have bumped she could have bumped we could have bumped you could have bumped they could have bumped	I could have been bumping you could have been bumping she could have been bumping we could have been bumping you could have been bumping they could have been bumping

Negation

Simple form	V-ing form
I couldn't bump you couldn't bump she couldn't bump we couldn't bump you couldn't bump they couldn't bump	I couldn't be bumping you couldn't be bumping she couldn't be bumping we couldn't be bumping you couldn't be bumping they couldn't be bumping
Perfect	V-ing perfect
I couldn't have bumped you couldn't have bumped she couldn't have bumped we couldn't have bumped you couldn't have bumped they couldn't have bumped	I couldn't have been bumping you couldn't have been bumping she couldn't have been bumping we couldn't have been bumping you couldn't have been bumping they couldn't have been bumping

Interrogative form

Simple form	V-ing form
could I bump? could you bump? could she bump? could we bump? could you bump? could they bump?	could I be bumping? could you be bumping? could she be bumping? could we be bumping? could you be bumping? could they be bumping?
Perfect	V-ing perfect
could I have bumped? could you have bumped? could she have bumped? could we have bumped? could you have bumped? could they have bumped?	could I have been bumping? could you have been bumping? could she have been bumping? could we have been bumping? could you have been bumping? could they have been bumping?

Interro-negative form

Simple form	V-ing form
couldn't I bump? couldn't you bump? couldn't she bump? couldn't we bump? couldn't you bump? couldn't they bump?	couldn't I be bumping? couldn't you be bumping? couldn't she be bumping? couldn't we be bumping? couldn't you be bumping? couldn't they be bumping?
Perfect	V-ing perfect
couldn't I have bumped? couldn't you have bumped? couldn't she have bumped? couldn't we have bumped? couldn't you have bumped? couldn't they have bumped?	couldn't I have been bumping? couldn't you have been bumping? couldn't she have been bumping? couldn't we have been bumping? couldn't you have been bumping? couldn't they have been bumping?