English verb conjugation
COULD DISCONFIRM

Regular verb: disconfirm - disconfirmed - disconfirmed

Affirmation

Simple form	V-ing form
I could disconfirm you could disconfirm she could disconfirm we could disconfirm you could disconfirm they could disconfirm	I could be disconfirming you could be disconfirming she could be disconfirming we could be disconfirming you could be disconfirming they could be disconfirming
Perfect	V-ing perfect
I could have disconfirmed you could have disconfirmed she could have disconfirmed we could have disconfirmed you could have disconfirmed they could have disconfirmed	I could have been disconfirming you could have been disconfirming she could have been disconfirming we could have been disconfirming you could have been disconfirming they could have been disconfirming

Negation

Simple form	V-ing form
I could not disconfirm you could not disconfirm she could not disconfirm we could not disconfirm you could not disconfirm they could not disconfirm	I could not be disconfirming you could not be disconfirming she could not be disconfirming we could not be disconfirming you could not be disconfirming they could not be disconfirming
Perfect	V-ing perfect
I could not have disconfirmed you could not have disconfirmed she could not have disconfirmed we could not have disconfirmed you could not have disconfirmed they could not have disconfirmed	I could not have been disconfirming you could not have been disconfirming she could not have been disconfirming we could not have been disconfirming you could not have been disconfirming they could not have been disconfirming

Interrogative form

Simple form	V-ing form
could I disconfirm? could you disconfirm? could she disconfirm? could we disconfirm? could you disconfirm? could they disconfirm?	could I be disconfirming? could you be disconfirming? could she be disconfirming? could we be disconfirming? could you be disconfirming? could they be disconfirming?
Perfect	V-ing perfect
could I have disconfirmed? could you have disconfirmed? could she have disconfirmed? could we have disconfirmed? could you have disconfirmed? could they have disconfirmed?	could I have been disconfirming? could you have been disconfirming? could she have been disconfirming? could we have been disconfirming? could you have been disconfirming? could they have been disconfirming?

Interro-negative form

Simple form	V-ing form
could I not disconfirm? could you not disconfirm? could she not disconfirm? could we not disconfirm? could you not disconfirm? could they not disconfirm?	could I not be disconfirming? could you not be disconfirming? could she not be disconfirming? could we not be disconfirming? could you not be disconfirming? could they not be disconfirming?
Perfect	V-ing perfect
could I not have disconfirmed? could you not have disconfirmed? could she not have disconfirmed? could we not have disconfirmed? could you not have disconfirmed? could they not have disconfirmed?	could I not have been disconfirming? could you not have been disconfirming? could she not have been disconfirming? could we not have been disconfirming? could you not have been disconfirming? could they not have been disconfirming?