English verb conjugation
COULD BURNISH

Regular verb: burnish - burnished - burnished

Affirmation

Simple form	V-ing form
I could burnish you could burnish she could burnish we could burnish you could burnish they could burnish	I could be burnishing you could be burnishing she could be burnishing we could be burnishing you could be burnishing they could be burnishing
Perfect	V-ing perfect
I could have burnished you could have burnished she could have burnished we could have burnished you could have burnished they could have burnished	I could have been burnishing you could have been burnishing she could have been burnishing we could have been burnishing you could have been burnishing they could have been burnishing

Negation

Simple form	V-ing form
I could not burnish you could not burnish she could not burnish we could not burnish you could not burnish they could not burnish	I could not be burnishing you could not be burnishing she could not be burnishing we could not be burnishing you could not be burnishing they could not be burnishing
Perfect	V-ing perfect
I could not have burnished you could not have burnished she could not have burnished we could not have burnished you could not have burnished they could not have burnished	I could not have been burnishing you could not have been burnishing she could not have been burnishing we could not have been burnishing you could not have been burnishing they could not have been burnishing

Interrogative form

Simple form	V-ing form
could I burnish? could you burnish? could she burnish? could we burnish? could you burnish? could they burnish?	could I be burnishing? could you be burnishing? could she be burnishing? could we be burnishing? could you be burnishing? could they be burnishing?
Perfect	V-ing perfect
could I have burnished? could you have burnished? could she have burnished? could we have burnished? could you have burnished? could they have burnished?	could I have been burnishing? could you have been burnishing? could she have been burnishing? could we have been burnishing? could you have been burnishing? could they have been burnishing?

Interro-negative form

Simple form	V-ing form
could I not burnish? could you not burnish? could she not burnish? could we not burnish? could you not burnish? could they not burnish?	could I not be burnishing? could you not be burnishing? could she not be burnishing? could we not be burnishing? could you not be burnishing? could they not be burnishing?
Perfect	V-ing perfect
could I not have burnished? could you not have burnished? could she not have burnished? could we not have burnished? could you not have burnished? could they not have burnished?	could I not have been burnishing? could you not have been burnishing? could she not have been burnishing? could we not have been burnishing? could you not have been burnishing? could they not have been burnishing?