should believe
Verbo regular: believe - believed- believed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd believe
you'd believe
he'd believe
we'd believe
you'd believe
they'd believe 	I'd be believing
you'd be believing
he'd be believing
we'd be believing
you'd be believing
they'd be believing	I should've believed
you should've believed
he should've believed
we should've believed
you should've believed
they should've believed	I should've been believing
you should've been believing
he should've been believing
we should've been believing
you should've been believing
they should've been believing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't believe
you shouldn't believe
he shouldn't believe
we shouldn't believe
you shouldn't believe
they shouldn't believe 	I shouldn't be believing
you shouldn't be believing
he shouldn't be believing
we shouldn't be believing
you shouldn't be believing
they shouldn't be believing	I shouldn't have believed
you shouldn't have believed
he shouldn't have believed
we shouldn't have believed
you shouldn't have believed
they shouldn't have believed	I shouldn't have been believing
you shouldn't have been believing
he shouldn't have been believing
we shouldn't have been believing
you shouldn't have been believing
they shouldn't have been believing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I believe?
should you believe?
should he believe?
should we believe?
should you believe?
should they believe? 	should I be believing?
should you be believing?
should he be believing?
should we be believing?
should you be believing?
should they be believing? 	should I have believed?
should you have believed?
should he have believed?
should we have believed?
should you have believed?
should they have believed? 	should I have been believing?
should you have been believing?
should he have been believing?
should we have been believing?
should you have been believing?
should they have been believing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I believe?
shouldn't you believe?
shouldn't he believe?
shouldn't we believe?
shouldn't you believe?
shouldn't they believe? 	shouldn't I be believing?
shouldn't you be believing?
shouldn't he be believing?
shouldn't we be believing?
shouldn't you be believing?
shouldn't they be believing? 	shouldn't I have believed?
shouldn't you have believed?
shouldn't he have believed?
shouldn't we have believed?
shouldn't you have believed?
shouldn't they have believed? 	shouldn't I have been believing?
shouldn't you have been believing?
shouldn't he have been believing?
shouldn't we have been believing?
shouldn't you have been believing?
shouldn't they have been believing?