English verb conjugation
COULD REFINISH

Regular verb: refinish - refinished - refinished

Affirmation

Simple form	V-ing form
I could refinish you could refinish he could refinish we could refinish you could refinish they could refinish	I could be refinishing you could be refinishing he could be refinishing we could be refinishing you could be refinishing they could be refinishing
Perfect	V-ing perfect
I could have refinished you could have refinished he could have refinished we could have refinished you could have refinished they could have refinished	I could have been refinishing you could have been refinishing he could have been refinishing we could have been refinishing you could have been refinishing they could have been refinishing

Negation

Simple form	V-ing form
I couldn't refinish you couldn't refinish he couldn't refinish we couldn't refinish you couldn't refinish they couldn't refinish	I couldn't be refinishing you couldn't be refinishing he couldn't be refinishing we couldn't be refinishing you couldn't be refinishing they couldn't be refinishing
Perfect	V-ing perfect
I couldn't have refinished you couldn't have refinished he couldn't have refinished we couldn't have refinished you couldn't have refinished they couldn't have refinished	I couldn't have been refinishing you couldn't have been refinishing he couldn't have been refinishing we couldn't have been refinishing you couldn't have been refinishing they couldn't have been refinishing

Interrogative form

Simple form	V-ing form
could I refinish? could you refinish? could he refinish? could we refinish? could you refinish? could they refinish?	could I be refinishing? could you be refinishing? could he be refinishing? could we be refinishing? could you be refinishing? could they be refinishing?
Perfect	V-ing perfect
could I have refinished? could you have refinished? could he have refinished? could we have refinished? could you have refinished? could they have refinished?	could I have been refinishing? could you have been refinishing? could he have been refinishing? could we have been refinishing? could you have been refinishing? could they have been refinishing?

Interro-negative form

Simple form	V-ing form
couldn't I refinish? couldn't you refinish? couldn't he refinish? couldn't we refinish? couldn't you refinish? couldn't they refinish?	couldn't I be refinishing? couldn't you be refinishing? couldn't he be refinishing? couldn't we be refinishing? couldn't you be refinishing? couldn't they be refinishing?
Perfect	V-ing perfect
couldn't I have refinished? couldn't you have refinished? couldn't he have refinished? couldn't we have refinished? couldn't you have refinished? couldn't they have refinished?	couldn't I have been refinishing? couldn't you have been refinishing? couldn't he have been refinishing? couldn't we have been refinishing? couldn't you have been refinishing? couldn't they have been refinishing?