I'd be frighten frightening you'd be frighten frightening he'd be frighten frightening we'd be frighten frightening you'd be frighten frightening they'd be frighten frightening
Perfect
I should've frighten frightened you should've frighten frightened he should've frighten frightened we should've frighten frightened you should've frighten frightened they should've frighten frightened
V-ing perfect
I should've been frighten frightening you should've been frighten frightening he should've been frighten frightening we should've been frighten frightening you should've been frighten frightening they should've been frighten frightening
Negation
Simple form
I shouldn't frighten frighten you shouldn't frighten frighten he shouldn't frighten frighten we shouldn't frighten frighten you shouldn't frighten frighten they shouldn't frighten frighten
V-ing form
I shouldn't be frighten frightening you shouldn't be frighten frightening he shouldn't be frighten frightening we shouldn't be frighten frightening you shouldn't be frighten frightening they shouldn't be frighten frightening
Perfect
I shouldn't have frighten frightened you shouldn't have frighten frightened he shouldn't have frighten frightened we shouldn't have frighten frightened you shouldn't have frighten frightened they shouldn't have frighten frightened
V-ing perfect
I shouldn't have been frighten frightening you shouldn't have been frighten frightening he shouldn't have been frighten frightening we shouldn't have been frighten frightening you shouldn't have been frighten frightening they shouldn't have been frighten frightening
Interrogative form
Simple form
should I frighten frighten? should you frighten frighten? should he 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 he 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 he 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 he 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
shouldn't I frighten frighten? shouldn't you frighten frighten? shouldn't he frighten frighten? shouldn't we frighten frighten? shouldn't you frighten frighten? shouldn't they frighten frighten?
V-ing form
shouldn't I be frighten frightening? shouldn't you be frighten frightening? shouldn't he be frighten frightening? shouldn't we be frighten frightening? shouldn't you be frighten frightening? shouldn't they be frighten frightening?
Perfect
shouldn't I have frighten frightened? shouldn't you have frighten frightened? shouldn't he have frighten frightened? shouldn't we have frighten frightened? shouldn't you have frighten frightened? shouldn't they have frighten frightened?
V-ing perfect
shouldn't I have been frighten frightening? shouldn't you have been frighten frightening? shouldn't he have been frighten frightening? shouldn't we have been frighten frightening? shouldn't you have been frighten frightening? shouldn't they have been frighten frightening?