should flap
Regular verb: flap - flapped- flapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd flap
you'd flap
he'd flap
we'd flap
you'd flap
they'd flap 	I'd be flapping
you'd be flapping
he'd be flapping
we'd be flapping
you'd be flapping
they'd be flapping	I should've flapped
you should've flapped
he should've flapped
we should've flapped
you should've flapped
they should've flapped	I should've been flapping
you should've been flapping
he should've been flapping
we should've been flapping
you should've been flapping
they should've been flapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't flap
you shouldn't flap
he shouldn't flap
we shouldn't flap
you shouldn't flap
they shouldn't flap 	I shouldn't be flapping
you shouldn't be flapping
he shouldn't be flapping
we shouldn't be flapping
you shouldn't be flapping
they shouldn't be flapping	I shouldn't have flapped
you shouldn't have flapped
he shouldn't have flapped
we shouldn't have flapped
you shouldn't have flapped
they shouldn't have flapped	I shouldn't have been flapping
you shouldn't have been flapping
he shouldn't have been flapping
we shouldn't have been flapping
you shouldn't have been flapping
they shouldn't have been flapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I flap?
should you flap?
should he flap?
should we flap?
should you flap?
should they flap? 	should I be flapping?
should you be flapping?
should he be flapping?
should we be flapping?
should you be flapping?
should they be flapping? 	should I have flapped?
should you have flapped?
should he have flapped?
should we have flapped?
should you have flapped?
should they have flapped? 	should I have been flapping?
should you have been flapping?
should he have been flapping?
should we have been flapping?
should you have been flapping?
should they have been flapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I flap?
shouldn't you flap?
shouldn't he flap?
shouldn't we flap?
shouldn't you flap?
shouldn't they flap? 	shouldn't I be flapping?
shouldn't you be flapping?
shouldn't he be flapping?
shouldn't we be flapping?
shouldn't you be flapping?
shouldn't they be flapping? 	shouldn't I have flapped?
shouldn't you have flapped?
shouldn't he have flapped?
shouldn't we have flapped?
shouldn't you have flapped?
shouldn't they have flapped? 	shouldn't I have been flapping?
shouldn't you have been flapping?
shouldn't he have been flapping?
shouldn't we have been flapping?
shouldn't you have been flapping?
shouldn't they have been flapping?