can curl
Regular verb: curl - curled- curled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can curl
you can curl
she can curl
we can curl
you can curl
they can curl 	I can be curling
you can be curling
she can be curling
we can be curling
you can be curling
they can be curling	I can have curled
you can have curled
she can have curled
we can have curled
you can have curled
they can have curled	I can have been curling
you can have been curling
she can have been curling
we can have been curling
you can have been curling
they can have been curling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot curl
you cannot curl
she cannot curl
we cannot curl
you cannot curl
they cannot curl 	I cannot be curling
you cannot be curling
she cannot be curling
we cannot be curling
you cannot be curling
they cannot be curling	I cannot have curled
you cannot have curled
she cannot have curled
we cannot have curled
you cannot have curled
they cannot have curled	I cannot have been curling
you cannot have been curling
she cannot have been curling
we cannot have been curling
you cannot have been curling
they cannot have been curling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I curl?
can you curl?
can she curl?
can we curl?
can you curl?
can they curl? 	can I be curling?
can you be curling?
can she be curling?
can we be curling?
can you be curling?
can they be curling? 	can I have curled?
can you have curled?
can she have curled?
can we have curled?
can you have curled?
can they have curled? 	can I have been curling?
can you have been curling?
can she have been curling?
can we have been curling?
can you have been curling?
can they have been curling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not curl?
can you not curl?
can she not curl?
can we not curl?
can you not curl?
can they not curl? 	can I not be curling?
can you not be curling?
can she not be curling?
can we not be curling?
can you not be curling?
can they not be curling? 	can I not have curled?
can you not have curled?
can she not have curled?
can we not have curled?
can you not have curled?
can they not have curled? 	can I not have been curling?
can you not have been curling?
can she not have been curling?
can we not have been curling?
can you not have been curling?
can they not have been curling?