English verb conjugation
COULD REMOVE

Regular verb: remove - removed - removed

Affirmation

Simple form	V-ing form
I could remove you could remove he could remove we could remove you could remove they could remove	I could be removing you could be removing he could be removing we could be removing you could be removing they could be removing
Perfect	V-ing perfect
I could have removed you could have removed he could have removed we could have removed you could have removed they could have removed	I could have been removing you could have been removing he could have been removing we could have been removing you could have been removing they could have been removing

Negation

Simple form	V-ing form
I couldn't remove you couldn't remove he couldn't remove we couldn't remove you couldn't remove they couldn't remove	I couldn't be removing you couldn't be removing he couldn't be removing we couldn't be removing you couldn't be removing they couldn't be removing
Perfect	V-ing perfect
I couldn't have removed you couldn't have removed he couldn't have removed we couldn't have removed you couldn't have removed they couldn't have removed	I couldn't have been removing you couldn't have been removing he couldn't have been removing we couldn't have been removing you couldn't have been removing they couldn't have been removing

Interrogative form

Simple form	V-ing form
could I remove? could you remove? could he remove? could we remove? could you remove? could they remove?	could I be removing? could you be removing? could he be removing? could we be removing? could you be removing? could they be removing?
Perfect	V-ing perfect
could I have removed? could you have removed? could he have removed? could we have removed? could you have removed? could they have removed?	could I have been removing? could you have been removing? could he have been removing? could we have been removing? could you have been removing? could they have been removing?

Interro-negative form

Simple form	V-ing form
couldn't I remove? couldn't you remove? couldn't he remove? couldn't we remove? couldn't you remove? couldn't they remove?	couldn't I be removing? couldn't you be removing? couldn't he be removing? couldn't we be removing? couldn't you be removing? couldn't they be removing?
Perfect	V-ing perfect
couldn't I have removed? couldn't you have removed? couldn't he have removed? couldn't we have removed? couldn't you have removed? couldn't they have removed?	couldn't I have been removing? couldn't you have been removing? couldn't he have been removing? couldn't we have been removing? couldn't you have been removing? couldn't they have been removing?