I can disconfirm you can disconfirm she can disconfirm we can disconfirm you can disconfirm they can disconfirm
V-ing form
I can be disconfirming you can be disconfirming she can be disconfirming we can be disconfirming you can be disconfirming they can be disconfirming
Perfect
I can have disconfirmed you can have disconfirmed she 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 she can have been disconfirming we can have been disconfirming you can have been disconfirming they can have been disconfirming
Negation
Simple form
I can't disconfirm you can't disconfirm she can't disconfirm we can't disconfirm you can't disconfirm they can't disconfirm
V-ing form
I can't be disconfirming you can't be disconfirming she can't be disconfirming we can't be disconfirming you can't be disconfirming they can't be disconfirming
Perfect
I can't have disconfirmed you can't have disconfirmed she can't have disconfirmed we can't have disconfirmed you can't have disconfirmed they can't have disconfirmed
V-ing perfect
I can't have been disconfirming you can't have been disconfirming she can't have been disconfirming we can't have been disconfirming you can't have been disconfirming they can't have been disconfirming
Interrogative form
Simple form
can I disconfirm? can you disconfirm? can she disconfirm? can we disconfirm? can you disconfirm? can they disconfirm?
V-ing form
can I be disconfirming? can you be disconfirming? can she be disconfirming? can we be disconfirming? can you be disconfirming? can they be disconfirming?
Perfect
can I have disconfirmed? can you have disconfirmed? can she 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 she have been disconfirming? can we have been disconfirming? can you have been disconfirming? can they have been disconfirming?
Interro-negative form
Simple form
can't I disconfirm? can't you disconfirm? can't she disconfirm? can't we disconfirm? can't you disconfirm? can't they disconfirm?
V-ing form
can't I be disconfirming? can't you be disconfirming? can't she be disconfirming? can't we be disconfirming? can't you be disconfirming? can't they be disconfirming?
Perfect
can't I have disconfirmed? can't you have disconfirmed? can't she have disconfirmed? can't we have disconfirmed? can't you have disconfirmed? can't they have disconfirmed?
V-ing perfect
can't I have been disconfirming? can't you have been disconfirming? can't she have been disconfirming? can't we have been disconfirming? can't you have been disconfirming? can't they have been disconfirming?