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