English verb conjugation
COULD DISCONFIRM

Regular verb: disconfirm - disconfirmed - disconfirmed

Affirmation

Simple form	V-ing form
I could disconfirm you could disconfirm he could disconfirm we could disconfirm you could disconfirm they could disconfirm	I could be disconfirming you could be disconfirming he 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 he 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 he 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 couldn't disconfirm you couldn't disconfirm he couldn't disconfirm we couldn't disconfirm you couldn't disconfirm they couldn't disconfirm	I couldn't be disconfirming you couldn't be disconfirming he couldn't be disconfirming we couldn't be disconfirming you couldn't be disconfirming they couldn't be disconfirming
Perfect	V-ing perfect
I couldn't have disconfirmed you couldn't have disconfirmed he couldn't have disconfirmed we couldn't have disconfirmed you couldn't have disconfirmed they couldn't have disconfirmed	I couldn't have been disconfirming you couldn't have been disconfirming he couldn't have been disconfirming we couldn't have been disconfirming you couldn't have been disconfirming they couldn't have been disconfirming

Interrogative form

Simple form	V-ing form
could I disconfirm? could you disconfirm? could he disconfirm? could we disconfirm? could you disconfirm? could they disconfirm?	could I be disconfirming? could you be disconfirming? could he 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 he 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 he 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
couldn't I disconfirm? couldn't you disconfirm? couldn't he disconfirm? couldn't we disconfirm? couldn't you disconfirm? couldn't they disconfirm?	couldn't I be disconfirming? couldn't you be disconfirming? couldn't he be disconfirming? couldn't we be disconfirming? couldn't you be disconfirming? couldn't they be disconfirming?
Perfect	V-ing perfect
couldn't I have disconfirmed? couldn't you have disconfirmed? couldn't he have disconfirmed? couldn't we have disconfirmed? couldn't you have disconfirmed? couldn't they have disconfirmed?	couldn't I have been disconfirming? couldn't you have been disconfirming? couldn't he have been disconfirming? couldn't we have been disconfirming? couldn't you have been disconfirming? couldn't they have been disconfirming?