can frighten
Regular verb: frighten - frightened- frightened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can frighten
you can frighten
he can frighten
we can frighten
you can frighten
they can frighten 	I can be frightening
you can be frightening
he can be frightening
we can be frightening
you can be frightening
they can be frightening	I can have frightened
you can have frightened
he can have frightened
we can have frightened
you can have frightened
they can have frightened	I can have been frightening
you can have been frightening
he can have been frightening
we can have been frightening
you can have been frightening
they can have been frightening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't frighten
you can't frighten
he can't frighten
we can't frighten
you can't frighten
they can't frighten 	I can't be frightening
you can't be frightening
he can't be frightening
we can't be frightening
you can't be frightening
they can't be frightening	I can't have frightened
you can't have frightened
he can't have frightened
we can't have frightened
you can't have frightened
they can't have frightened	I can't have been frightening
you can't have been frightening
he can't have been frightening
we can't have been frightening
you can't have been frightening
they can't have been frightening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I frighten?
can you frighten?
can he frighten?
can we frighten?
can you frighten?
can they frighten? 	can I be frightening?
can you be frightening?
can he be frightening?
can we be frightening?
can you be frightening?
can they be frightening? 	can I have frightened?
can you have frightened?
can he have frightened?
can we have frightened?
can you have frightened?
can they have frightened? 	can I have been frightening?
can you have been frightening?
can he have been frightening?
can we have been frightening?
can you have been frightening?
can they have been frightening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I frighten?
can't you frighten?
can't he frighten?
can't we frighten?
can't you frighten?
can't they frighten? 	can't I be frightening?
can't you be frightening?
can't he be frightening?
can't we be frightening?
can't you be frightening?
can't they be frightening? 	can't I have frightened?
can't you have frightened?
can't he have frightened?
can't we have frightened?
can't you have frightened?
can't they have frightened? 	can't I have been frightening?
can't you have been frightening?
can't he have been frightening?
can't we have been frightening?
can't you have been frightening?
can't they have been frightening?