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