English verb conjugation
CAN TELL

Irregular verb: tell - told - told

Affirmation

Simple form	V-ing form
I can tell you can tell he can tell we can tell you can tell they can tell	I can be telling you can be telling he can be telling we can be telling you can be telling they can be telling
Perfect	V-ing perfect
I can have told you can have told he can have told we can have told you can have told they can have told	I can have been telling you can have been telling he can have been telling we can have been telling you can have been telling they can have been telling

Negation

Simple form	V-ing form
I cannot tell you cannot tell he cannot tell we cannot tell you cannot tell they cannot tell	I cannot be telling you cannot be telling he cannot be telling we cannot be telling you cannot be telling they cannot be telling
Perfect	V-ing perfect
I cannot have told you cannot have told he cannot have told we cannot have told you cannot have told they cannot have told	I cannot have been telling you cannot have been telling he cannot have been telling we cannot have been telling you cannot have been telling they cannot have been telling

Interrogative form

Simple form	V-ing form
can I tell? can you tell? can he tell? can we tell? can you tell? can they tell?	can I be telling? can you be telling? can he be telling? can we be telling? can you be telling? can they be telling?
Perfect	V-ing perfect
can I have told? can you have told? can he have told? can we have told? can you have told? can they have told?	can I have been telling? can you have been telling? can he have been telling? can we have been telling? can you have been telling? can they have been telling?

Interro-negative form

Simple form	V-ing form
can I not tell? can you not tell? can he not tell? can we not tell? can you not tell? can they not tell?	can I not be telling? can you not be telling? can he not be telling? can we not be telling? can you not be telling? can they not be telling?
Perfect	V-ing perfect
can I not have told? can you not have told? can he not have told? can we not have told? can you not have told? can they not have told?	can I not have been telling? can you not have been telling? can he not have been telling? can we not have been telling? can you not have been telling? can they not have been telling?