English verb conjugation
COULD BLUR

Regular verb: blur - blurred - blurred

Affirmation

Simple form	V-ing form
I could blur you could blur she could blur we could blur you could blur they could blur	I could be blurring you could be blurring she could be blurring we could be blurring you could be blurring they could be blurring
Perfect	V-ing perfect
I could have blurred you could have blurred she could have blurred we could have blurred you could have blurred they could have blurred	I could have been blurring you could have been blurring she could have been blurring we could have been blurring you could have been blurring they could have been blurring

Negation

Simple form	V-ing form
I couldn't blur you couldn't blur she couldn't blur we couldn't blur you couldn't blur they couldn't blur	I couldn't be blurring you couldn't be blurring she couldn't be blurring we couldn't be blurring you couldn't be blurring they couldn't be blurring
Perfect	V-ing perfect
I couldn't have blurred you couldn't have blurred she couldn't have blurred we couldn't have blurred you couldn't have blurred they couldn't have blurred	I couldn't have been blurring you couldn't have been blurring she couldn't have been blurring we couldn't have been blurring you couldn't have been blurring they couldn't have been blurring

Interrogative form

Simple form	V-ing form
could I blur? could you blur? could she blur? could we blur? could you blur? could they blur?	could I be blurring? could you be blurring? could she be blurring? could we be blurring? could you be blurring? could they be blurring?
Perfect	V-ing perfect
could I have blurred? could you have blurred? could she have blurred? could we have blurred? could you have blurred? could they have blurred?	could I have been blurring? could you have been blurring? could she have been blurring? could we have been blurring? could you have been blurring? could they have been blurring?

Interro-negative form

Simple form	V-ing form
couldn't I blur? couldn't you blur? couldn't she blur? couldn't we blur? couldn't you blur? couldn't they blur?	couldn't I be blurring? couldn't you be blurring? couldn't she be blurring? couldn't we be blurring? couldn't you be blurring? couldn't they be blurring?
Perfect	V-ing perfect
couldn't I have blurred? couldn't you have blurred? couldn't she have blurred? couldn't we have blurred? couldn't you have blurred? couldn't they have blurred?	couldn't I have been blurring? couldn't you have been blurring? couldn't she have been blurring? couldn't we have been blurring? couldn't you have been blurring? couldn't they have been blurring?