I can disconfirm you can disconfirm he can disconfirm we can disconfirm you can disconfirm they can disconfirm
V-ing form
I can be disconfirming you can be disconfirming he can be disconfirming we can be disconfirming you can be disconfirming they can be disconfirming
Perfect
I can have disconfirmed you can have disconfirmed he can have disconfirmed we can have disconfirmed you can have disconfirmed they can have disconfirmed
V-ing perfect
I can have been disconfirming you can have been disconfirming he can have been disconfirming we can have been disconfirming you can have been disconfirming they can have been disconfirming
Negation
Simple form
I cannot disconfirm you cannot disconfirm he cannot disconfirm we cannot disconfirm you cannot disconfirm they cannot disconfirm
V-ing form
I cannot be disconfirming you cannot be disconfirming he cannot be disconfirming we cannot be disconfirming you cannot be disconfirming they cannot be disconfirming
Perfect
I cannot have disconfirmed you cannot have disconfirmed he cannot have disconfirmed we cannot have disconfirmed you cannot have disconfirmed they cannot have disconfirmed
V-ing perfect
I cannot have been disconfirming you cannot have been disconfirming he cannot have been disconfirming we cannot have been disconfirming you cannot have been disconfirming they cannot have been disconfirming
Interrogative form
Simple form
can I disconfirm? can you disconfirm? can he disconfirm? can we disconfirm? can you disconfirm? can they disconfirm?
V-ing form
can I be disconfirming? can you be disconfirming? can he be disconfirming? can we be disconfirming? can you be disconfirming? can they be disconfirming?
Perfect
can I have disconfirmed? can you have disconfirmed? can he have disconfirmed? can we have disconfirmed? can you have disconfirmed? can they have disconfirmed?
V-ing perfect
can I have been disconfirming? can you have been disconfirming? can he have been disconfirming? can we have been disconfirming? can you have been disconfirming? can they have been disconfirming?
Interro-negative form
Simple form
can I not disconfirm? can you not disconfirm? can he not disconfirm? can we not disconfirm? can you not disconfirm? can they not disconfirm?
V-ing form
can I not be disconfirming? can you not be disconfirming? can he not be disconfirming? can we not be disconfirming? can you not be disconfirming? can they not be disconfirming?
Perfect
can I not have disconfirmed? can you not have disconfirmed? can he not have disconfirmed? can we not have disconfirmed? can you not have disconfirmed? can they not have disconfirmed?
V-ing perfect
can I not have been disconfirming? can you not have been disconfirming? can he not have been disconfirming? can we not have been disconfirming? can you not have been disconfirming? can they not have been disconfirming?