can twinkle
Regular verb: twinkle - twinkled- twinkled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can twinkle
you can twinkle
she can twinkle
we can twinkle
you can twinkle
they can twinkle 	I can be twinkling
you can be twinkling
she can be twinkling
we can be twinkling
you can be twinkling
they can be twinkling	I can have twinkled
you can have twinkled
she can have twinkled
we can have twinkled
you can have twinkled
they can have twinkled	I can have been twinkling
you can have been twinkling
she can have been twinkling
we can have been twinkling
you can have been twinkling
they can have been twinkling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot twinkle
you cannot twinkle
she cannot twinkle
we cannot twinkle
you cannot twinkle
they cannot twinkle 	I cannot be twinkling
you cannot be twinkling
she cannot be twinkling
we cannot be twinkling
you cannot be twinkling
they cannot be twinkling	I cannot have twinkled
you cannot have twinkled
she cannot have twinkled
we cannot have twinkled
you cannot have twinkled
they cannot have twinkled	I cannot have been twinkling
you cannot have been twinkling
she cannot have been twinkling
we cannot have been twinkling
you cannot have been twinkling
they cannot have been twinkling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I twinkle?
can you twinkle?
can she twinkle?
can we twinkle?
can you twinkle?
can they twinkle? 	can I be twinkling?
can you be twinkling?
can she be twinkling?
can we be twinkling?
can you be twinkling?
can they be twinkling? 	can I have twinkled?
can you have twinkled?
can she have twinkled?
can we have twinkled?
can you have twinkled?
can they have twinkled? 	can I have been twinkling?
can you have been twinkling?
can she have been twinkling?
can we have been twinkling?
can you have been twinkling?
can they have been twinkling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not twinkle?
can you not twinkle?
can she not twinkle?
can we not twinkle?
can you not twinkle?
can they not twinkle? 	can I not be twinkling?
can you not be twinkling?
can she not be twinkling?
can we not be twinkling?
can you not be twinkling?
can they not be twinkling? 	can I not have twinkled?
can you not have twinkled?
can she not have twinkled?
can we not have twinkled?
can you not have twinkled?
can they not have twinkled? 	can I not have been twinkling?
can you not have been twinkling?
can she not have been twinkling?
can we not have been twinkling?
can you not have been twinkling?
can they not have been twinkling?