can philter
Regular verb: philter - philtered- philtered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can philter
you can philter
he can philter
we can philter
you can philter
they can philter 	I can be philtering
you can be philtering
he can be philtering
we can be philtering
you can be philtering
they can be philtering	I can have philtered
you can have philtered
he can have philtered
we can have philtered
you can have philtered
they can have philtered	I can have been philtering
you can have been philtering
he can have been philtering
we can have been philtering
you can have been philtering
they can have been philtering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot philter
you cannot philter
he cannot philter
we cannot philter
you cannot philter
they cannot philter 	I cannot be philtering
you cannot be philtering
he cannot be philtering
we cannot be philtering
you cannot be philtering
they cannot be philtering	I cannot have philtered
you cannot have philtered
he cannot have philtered
we cannot have philtered
you cannot have philtered
they cannot have philtered	I cannot have been philtering
you cannot have been philtering
he cannot have been philtering
we cannot have been philtering
you cannot have been philtering
they cannot have been philtering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I philter?
can you philter?
can he philter?
can we philter?
can you philter?
can they philter? 	can I be philtering?
can you be philtering?
can he be philtering?
can we be philtering?
can you be philtering?
can they be philtering? 	can I have philtered?
can you have philtered?
can he have philtered?
can we have philtered?
can you have philtered?
can they have philtered? 	can I have been philtering?
can you have been philtering?
can he have been philtering?
can we have been philtering?
can you have been philtering?
can they have been philtering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not philter?
can you not philter?
can he not philter?
can we not philter?
can you not philter?
can they not philter? 	can I not be philtering?
can you not be philtering?
can he not be philtering?
can we not be philtering?
can you not be philtering?
can they not be philtering? 	can I not have philtered?
can you not have philtered?
can he not have philtered?
can we not have philtered?
can you not have philtered?
can they not have philtered? 	can I not have been philtering?
can you not have been philtering?
can he not have been philtering?
can we not have been philtering?
can you not have been philtering?
can they not have been philtering?