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 can't philter
you can't philter
he can't philter
we can't philter
you can't philter
they can't philter 	I can't be philtering
you can't be philtering
he can't be philtering
we can't be philtering
you can't be philtering
they can't be philtering	I can't have philtered
you can't have philtered
he can't have philtered
we can't have philtered
you can't have philtered
they can't have philtered	I can't have been philtering
you can't have been philtering
he can't have been philtering
we can't have been philtering
you can't have been philtering
they can't 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't I philter?
can't you philter?
can't he philter?
can't we philter?
can't you philter?
can't they philter? 	can't I be philtering?
can't you be philtering?
can't he be philtering?
can't we be philtering?
can't you be philtering?
can't they be philtering? 	can't I have philtered?
can't you have philtered?
can't he have philtered?
can't we have philtered?
can't you have philtered?
can't they have philtered? 	can't I have been philtering?
can't you have been philtering?
can't he have been philtering?
can't we have been philtering?
can't you have been philtering?
can't they have been philtering?