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 cannot call
you cannot call
she cannot call
we cannot call
you cannot call
they cannot call 	I cannot be calling
you cannot be calling
she cannot be calling
we cannot be calling
you cannot be calling
they cannot be calling	I cannot have called
you cannot have called
she cannot have called
we cannot have called
you cannot have called
they cannot have called	I cannot have been calling
you cannot have been calling
she cannot have been calling
we cannot have been calling
you cannot have been calling
they cannot 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 I not call?
can you not call?
can she not call?
can we not call?
can you not call?
can they not call? 	can I not be calling?
can you not be calling?
can she not be calling?
can we not be calling?
can you not be calling?
can they not be calling? 	can I not have called?
can you not have called?
can she not have called?
can we not have called?
can you not have called?
can they not have called? 	can I not have been calling?
can you not have been calling?
can she not have been calling?
can we not have been calling?
can you not have been calling?
can they not have been calling?