can shrill
Regular verb: shrill - shrilled- shrilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can shrill
you can shrill
he can shrill
we can shrill
you can shrill
they can shrill 	I can be shrilling
you can be shrilling
he can be shrilling
we can be shrilling
you can be shrilling
they can be shrilling	I can have shrilled
you can have shrilled
he can have shrilled
we can have shrilled
you can have shrilled
they can have shrilled	I can have been shrilling
you can have been shrilling
he can have been shrilling
we can have been shrilling
you can have been shrilling
they can have been shrilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't shrill
you can't shrill
he can't shrill
we can't shrill
you can't shrill
they can't shrill 	I can't be shrilling
you can't be shrilling
he can't be shrilling
we can't be shrilling
you can't be shrilling
they can't be shrilling	I can't have shrilled
you can't have shrilled
he can't have shrilled
we can't have shrilled
you can't have shrilled
they can't have shrilled	I can't have been shrilling
you can't have been shrilling
he can't have been shrilling
we can't have been shrilling
you can't have been shrilling
they can't have been shrilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I shrill?
can you shrill?
can he shrill?
can we shrill?
can you shrill?
can they shrill? 	can I be shrilling?
can you be shrilling?
can he be shrilling?
can we be shrilling?
can you be shrilling?
can they be shrilling? 	can I have shrilled?
can you have shrilled?
can he have shrilled?
can we have shrilled?
can you have shrilled?
can they have shrilled? 	can I have been shrilling?
can you have been shrilling?
can he have been shrilling?
can we have been shrilling?
can you have been shrilling?
can they have been shrilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I shrill?
can't you shrill?
can't he shrill?
can't we shrill?
can't you shrill?
can't they shrill? 	can't I be shrilling?
can't you be shrilling?
can't he be shrilling?
can't we be shrilling?
can't you be shrilling?
can't they be shrilling? 	can't I have shrilled?
can't you have shrilled?
can't he have shrilled?
can't we have shrilled?
can't you have shrilled?
can't they have shrilled? 	can't I have been shrilling?
can't you have been shrilling?
can't he have been shrilling?
can't we have been shrilling?
can't you have been shrilling?
can't they have been shrilling?