English verb conjugation
COULD UM

Regular verb: um - umed - umed

Affirmation

Simple form	V-ing form
I could um you could um she could um we could um you could um they could um	I could be uming you could be uming she could be uming we could be uming you could be uming they could be uming
Perfect	V-ing perfect
I could have umed you could have umed she could have umed we could have umed you could have umed they could have umed	I could have been uming you could have been uming she could have been uming we could have been uming you could have been uming they could have been uming

Negation

Simple form	V-ing form
I could not um you could not um she could not um we could not um you could not um they could not um	I could not be uming you could not be uming she could not be uming we could not be uming you could not be uming they could not be uming
Perfect	V-ing perfect
I could not have umed you could not have umed she could not have umed we could not have umed you could not have umed they could not have umed	I could not have been uming you could not have been uming she could not have been uming we could not have been uming you could not have been uming they could not have been uming

Interrogative form

Simple form	V-ing form
could I um? could you um? could she um? could we um? could you um? could they um?	could I be uming? could you be uming? could she be uming? could we be uming? could you be uming? could they be uming?
Perfect	V-ing perfect
could I have umed? could you have umed? could she have umed? could we have umed? could you have umed? could they have umed?	could I have been uming? could you have been uming? could she have been uming? could we have been uming? could you have been uming? could they have been uming?

Interro-negative form

Simple form	V-ing form
could I not um? could you not um? could she not um? could we not um? could you not um? could they not um?	could I not be uming? could you not be uming? could she not be uming? could we not be uming? could you not be uming? could they not be uming?
Perfect	V-ing perfect
could I not have umed? could you not have umed? could she not have umed? could we not have umed? could you not have umed? could they not have umed?	could I not have been uming? could you not have been uming? could she not have been uming? could we not have been uming? could you not have been uming? could they not have been uming?