I'd be giggling you'd be giggling he'd be giggling we'd be giggling you'd be giggling they'd be giggling
Perfect
I should've giggled you should've giggled he should've giggled we should've giggled you should've giggled they should've giggled
V-ing perfect
I should've been giggling you should've been giggling he should've been giggling we should've been giggling you should've been giggling they should've been giggling
Negation
Simple form
I shouldn't giggle you shouldn't giggle he shouldn't giggle we shouldn't giggle you shouldn't giggle they shouldn't giggle
V-ing form
I shouldn't be giggling you shouldn't be giggling he shouldn't be giggling we shouldn't be giggling you shouldn't be giggling they shouldn't be giggling
Perfect
I shouldn't have giggled you shouldn't have giggled he shouldn't have giggled we shouldn't have giggled you shouldn't have giggled they shouldn't have giggled
V-ing perfect
I shouldn't have been giggling you shouldn't have been giggling he shouldn't have been giggling we shouldn't have been giggling you shouldn't have been giggling they shouldn't have been giggling
Interrogative form
Simple form
should I giggle? should you giggle? should he giggle? should we giggle? should you giggle? should they giggle?
V-ing form
should I be giggling? should you be giggling? should he be giggling? should we be giggling? should you be giggling? should they be giggling?
Perfect
should I have giggled? should you have giggled? should he have giggled? should we have giggled? should you have giggled? should they have giggled?
V-ing perfect
should I have been giggling? should you have been giggling? should he have been giggling? should we have been giggling? should you have been giggling? should they have been giggling?
Interro-negative form
Simple form
shouldn't I giggle? shouldn't you giggle? shouldn't he giggle? shouldn't we giggle? shouldn't you giggle? shouldn't they giggle?
V-ing form
shouldn't I be giggling? shouldn't you be giggling? shouldn't he be giggling? shouldn't we be giggling? shouldn't you be giggling? shouldn't they be giggling?
Perfect
shouldn't I have giggled? shouldn't you have giggled? shouldn't he have giggled? shouldn't we have giggled? shouldn't you have giggled? shouldn't they have giggled?
V-ing perfect
shouldn't I have been giggling? shouldn't you have been giggling? shouldn't he have been giggling? shouldn't we have been giggling? shouldn't you have been giggling? shouldn't they have been giggling?