English verb conjugation
CAN ID

Regular verb: id - ided - ided

Affirmation

Simple form	V-ing form
I can id you can id he can id we can id you can id they can id	I can be iding you can be iding he can be iding we can be iding you can be iding they can be iding
Perfect	V-ing perfect
I can have ided you can have ided he can have ided we can have ided you can have ided they can have ided	I can have been iding you can have been iding he can have been iding we can have been iding you can have been iding they can have been iding

Negation

Simple form	V-ing form
I cannot id you cannot id he cannot id we cannot id you cannot id they cannot id	I cannot be iding you cannot be iding he cannot be iding we cannot be iding you cannot be iding they cannot be iding
Perfect	V-ing perfect
I cannot have ided you cannot have ided he cannot have ided we cannot have ided you cannot have ided they cannot have ided	I cannot have been iding you cannot have been iding he cannot have been iding we cannot have been iding you cannot have been iding they cannot have been iding

Interrogative form

Simple form	V-ing form
can I id? can you id? can he id? can we id? can you id? can they id?	can I be iding? can you be iding? can he be iding? can we be iding? can you be iding? can they be iding?
Perfect	V-ing perfect
can I have ided? can you have ided? can he have ided? can we have ided? can you have ided? can they have ided?	can I have been iding? can you have been iding? can he have been iding? can we have been iding? can you have been iding? can they have been iding?

Interro-negative form

Simple form	V-ing form
can I not id? can you not id? can he not id? can we not id? can you not id? can they not id?	can I not be iding? can you not be iding? can he not be iding? can we not be iding? can you not be iding? can they not be iding?
Perfect	V-ing perfect
can I not have ided? can you not have ided? can he not have ided? can we not have ided? can you not have ided? can they not have ided?	can I not have been iding? can you not have been iding? can he not have been iding? can we not have been iding? can you not have been iding? can they not have been iding?