can call
Regular verb: call - called- called

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can call
you can call
she can call
we can call
you can call
they can call 	I can be calling
you can be calling
she can be calling
we can be calling
you can be calling
they can be calling	I can have called
you can have called
she can have called
we can have called
you can have called
they can have called	I can have been calling
you can have been calling
she can have been calling
we can have been calling
you can have been calling
they can have been calling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't call
you can't call
she can't call
we can't call
you can't call
they can't call 	I can't be calling
you can't be calling
she can't be calling
we can't be calling
you can't be calling
they can't be calling	I can't have called
you can't have called
she can't have called
we can't have called
you can't have called
they can't have called	I can't have been calling
you can't have been calling
she can't have been calling
we can't have been calling
you can't have been calling
they can't have been calling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I call?
can you call?
can she call?
can we call?
can you call?
can they call? 	can I be calling?
can you be calling?
can she be calling?
can we be calling?
can you be calling?
can they be calling? 	can I have called?
can you have called?
can she have called?
can we have called?
can you have called?
can they have called? 	can I have been calling?
can you have been calling?
can she have been calling?
can we have been calling?
can you have been calling?
can they have been calling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I call?
can't you call?
can't she call?
can't we call?
can't you call?
can't they call? 	can't I be calling?
can't you be calling?
can't she be calling?
can't we be calling?
can't you be calling?
can't they be calling? 	can't I have called?
can't you have called?
can't she have called?
can't we have called?
can't you have called?
can't they have called? 	can't I have been calling?
can't you have been calling?
can't she have been calling?
can't we have been calling?
can't you have been calling?
can't they have been calling?