Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can frighten frighten you can frighten frighten he can frighten frighten we can frighten frighten you can frighten frighten they can frighten frighten
V-ing form
I can be frighten frightening you can be frighten frightening he can be frighten frightening we can be frighten frightening you can be frighten frightening they can be frighten frightening
Perfect
I can have frighten frightened you can have frighten frightened he can have frighten frightened we can have frighten frightened you can have frighten frightened they can have frighten frightened
V-ing perfect
I can have been frighten frightening you can have been frighten frightening he can have been frighten frightening we can have been frighten frightening you can have been frighten frightening they can have been frighten frightening
Negation
Simple form
I can't frighten frighten you can't frighten frighten he can't frighten frighten we can't frighten frighten you can't frighten frighten they can't frighten frighten
V-ing form
I can't be frighten frightening you can't be frighten frightening he can't be frighten frightening we can't be frighten frightening you can't be frighten frightening they can't be frighten frightening
Perfect
I can't have frighten frightened you can't have frighten frightened he can't have frighten frightened we can't have frighten frightened you can't have frighten frightened they can't have frighten frightened
V-ing perfect
I can't have been frighten frightening you can't have been frighten frightening he can't have been frighten frightening we can't have been frighten frightening you can't have been frighten frightening they can't have been frighten frightening
Interrogative form
Simple form
can I frighten frighten? can you frighten frighten? can he frighten frighten? can we frighten frighten? can you frighten frighten? can they frighten frighten?
V-ing form
can I be frighten frightening? can you be frighten frightening? can he be frighten frightening? can we be frighten frightening? can you be frighten frightening? can they be frighten frightening?
Perfect
can I have frighten frightened? can you have frighten frightened? can he have frighten frightened? can we have frighten frightened? can you have frighten frightened? can they have frighten frightened?
V-ing perfect
can I have been frighten frightening? can you have been frighten frightening? can he have been frighten frightening? can we have been frighten frightening? can you have been frighten frightening? can they have been frighten frightening?
Interro-negative form
Simple form
can't I frighten frighten? can't you frighten frighten? can't he frighten frighten? can't we frighten frighten? can't you frighten frighten? can't they frighten frighten?
V-ing form
can't I be frighten frightening? can't you be frighten frightening? can't he be frighten frightening? can't we be frighten frightening? can't you be frighten frightening? can't they be frighten frightening?
Perfect
can't I have frighten frightened? can't you have frighten frightened? can't he have frighten frightened? can't we have frighten frightened? can't you have frighten frightened? can't they have frighten frightened?
V-ing perfect
can't I have been frighten frightening? can't you have been frighten frightening? can't he have been frighten frightening? can't we have been frighten frightening? can't you have been frighten frightening? can't they have been frighten frightening?