can purr
Regular verb: purr - purred- purred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can purr
you can purr
he can purr
we can purr
you can purr
they can purr 	I can be purring
you can be purring
he can be purring
we can be purring
you can be purring
they can be purring	I can have purred
you can have purred
he can have purred
we can have purred
you can have purred
they can have purred	I can have been purring
you can have been purring
he can have been purring
we can have been purring
you can have been purring
they can have been purring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't purr
you can't purr
he can't purr
we can't purr
you can't purr
they can't purr 	I can't be purring
you can't be purring
he can't be purring
we can't be purring
you can't be purring
they can't be purring	I can't have purred
you can't have purred
he can't have purred
we can't have purred
you can't have purred
they can't have purred	I can't have been purring
you can't have been purring
he can't have been purring
we can't have been purring
you can't have been purring
they can't have been purring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I purr?
can you purr?
can he purr?
can we purr?
can you purr?
can they purr? 	can I be purring?
can you be purring?
can he be purring?
can we be purring?
can you be purring?
can they be purring? 	can I have purred?
can you have purred?
can he have purred?
can we have purred?
can you have purred?
can they have purred? 	can I have been purring?
can you have been purring?
can he have been purring?
can we have been purring?
can you have been purring?
can they have been purring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I purr?
can't you purr?
can't he purr?
can't we purr?
can't you purr?
can't they purr? 	can't I be purring?
can't you be purring?
can't he be purring?
can't we be purring?
can't you be purring?
can't they be purring? 	can't I have purred?
can't you have purred?
can't he have purred?
can't we have purred?
can't you have purred?
can't they have purred? 	can't I have been purring?
can't you have been purring?
can't he have been purring?
can't we have been purring?
can't you have been purring?
can't they have been purring?