English verb conjugation
CAN CONFIRM

Regular verb: confirm - confirmed - confirmed

Affirmation

Simple form	V-ing form
I can confirm you can confirm he can confirm we can confirm you can confirm they can confirm	I can be confirming you can be confirming he can be confirming we can be confirming you can be confirming they can be confirming
Perfect	V-ing perfect
I can have confirmed you can have confirmed he can have confirmed we can have confirmed you can have confirmed they can have confirmed	I can have been confirming you can have been confirming he can have been confirming we can have been confirming you can have been confirming they can have been confirming

Negation

Simple form	V-ing form
I can't confirm you can't confirm he can't confirm we can't confirm you can't confirm they can't confirm	I can't be confirming you can't be confirming he can't be confirming we can't be confirming you can't be confirming they can't be confirming
Perfect	V-ing perfect
I can't have confirmed you can't have confirmed he can't have confirmed we can't have confirmed you can't have confirmed they can't have confirmed	I can't have been confirming you can't have been confirming he can't have been confirming we can't have been confirming you can't have been confirming they can't have been confirming

Interrogative form

Simple form	V-ing form
can I confirm? can you confirm? can he confirm? can we confirm? can you confirm? can they confirm?	can I be confirming? can you be confirming? can he be confirming? can we be confirming? can you be confirming? can they be confirming?
Perfect	V-ing perfect
can I have confirmed? can you have confirmed? can he have confirmed? can we have confirmed? can you have confirmed? can they have confirmed?	can I have been confirming? can you have been confirming? can he have been confirming? can we have been confirming? can you have been confirming? can they have been confirming?

Interro-negative form

Simple form	V-ing form
can't I confirm? can't you confirm? can't he confirm? can't we confirm? can't you confirm? can't they confirm?	can't I be confirming? can't you be confirming? can't he be confirming? can't we be confirming? can't you be confirming? can't they be confirming?
Perfect	V-ing perfect
can't I have confirmed? can't you have confirmed? can't he have confirmed? can't we have confirmed? can't you have confirmed? can't they have confirmed?	can't I have been confirming? can't you have been confirming? can't he have been confirming? can't we have been confirming? can't you have been confirming? can't they have been confirming?