English verb conjugation
COULD REFINISH

Regular verb: refinish - refinished - refinished

Affirmation

Simple form	V-ing form
I could refinish you could refinish she could refinish we could refinish you could refinish they could refinish	I could be refinishing you could be refinishing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she refinish? could we refinish? could you refinish? could they refinish?	could I be refinishing? could you be refinishing? could she 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 she 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 she 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 she 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 she 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 she 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 she have been refinishing? couldn't we have been refinishing? couldn't you have been refinishing? couldn't they have been refinishing?