can twinkle
Regular verb: twinkle - twinkled- twinkled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can twinkle
you can twinkle
he can twinkle
we can twinkle
you can twinkle
they can twinkle 	I can be twinkling
you can be twinkling
he can be twinkling
we can be twinkling
you can be twinkling
they can be twinkling	I can have twinkled
you can have twinkled
he 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
he 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 can't twinkle
you can't twinkle
he can't twinkle
we can't twinkle
you can't twinkle
they can't twinkle 	I can't be twinkling
you can't be twinkling
he can't be twinkling
we can't be twinkling
you can't be twinkling
they can't be twinkling	I can't have twinkled
you can't have twinkled
he can't have twinkled
we can't have twinkled
you can't have twinkled
they can't have twinkled	I can't have been twinkling
you can't have been twinkling
he can't have been twinkling
we can't have been twinkling
you can't have been twinkling
they can't have been twinkling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I twinkle?
can you twinkle?
can he twinkle?
can we twinkle?
can you twinkle?
can they twinkle? 	can I be twinkling?
can you be twinkling?
can he be twinkling?
can we be twinkling?
can you be twinkling?
can they be twinkling? 	can I have twinkled?
can you have twinkled?
can he 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 he 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't I twinkle?
can't you twinkle?
can't he twinkle?
can't we twinkle?
can't you twinkle?
can't they twinkle? 	can't I be twinkling?
can't you be twinkling?
can't he be twinkling?
can't we be twinkling?
can't you be twinkling?
can't they be twinkling? 	can't I have twinkled?
can't you have twinkled?
can't he have twinkled?
can't we have twinkled?
can't you have twinkled?
can't they have twinkled? 	can't I have been twinkling?
can't you have been twinkling?
can't he have been twinkling?
can't we have been twinkling?
can't you have been twinkling?
can't they have been twinkling?