English verb conjugation
CAN VERIFY

Regular verb: verify - verified - verified

Affirmation

Simple form	V-ing form
I can verify you can verify he can verify we can verify you can verify they can verify	I can be verifying you can be verifying he can be verifying we can be verifying you can be verifying they can be verifying
Perfect	V-ing perfect
I can have verified you can have verified he can have verified we can have verified you can have verified they can have verified	I can have been verifying you can have been verifying he can have been verifying we can have been verifying you can have been verifying they can have been verifying

Negation

Simple form	V-ing form
I can't verify you can't verify he can't verify we can't verify you can't verify they can't verify	I can't be verifying you can't be verifying he can't be verifying we can't be verifying you can't be verifying they can't be verifying
Perfect	V-ing perfect
I can't have verified you can't have verified he can't have verified we can't have verified you can't have verified they can't have verified	I can't have been verifying you can't have been verifying he can't have been verifying we can't have been verifying you can't have been verifying they can't have been verifying

Interrogative form

Simple form	V-ing form
can I verify? can you verify? can he verify? can we verify? can you verify? can they verify?	can I be verifying? can you be verifying? can he be verifying? can we be verifying? can you be verifying? can they be verifying?
Perfect	V-ing perfect
can I have verified? can you have verified? can he have verified? can we have verified? can you have verified? can they have verified?	can I have been verifying? can you have been verifying? can he have been verifying? can we have been verifying? can you have been verifying? can they have been verifying?

Interro-negative form

Simple form	V-ing form
can't I verify? can't you verify? can't he verify? can't we verify? can't you verify? can't they verify?	can't I be verifying? can't you be verifying? can't he be verifying? can't we be verifying? can't you be verifying? can't they be verifying?
Perfect	V-ing perfect
can't I have verified? can't you have verified? can't he have verified? can't we have verified? can't you have verified? can't they have verified?	can't I have been verifying? can't you have been verifying? can't he have been verifying? can't we have been verifying? can't you have been verifying? can't they have been verifying?