should retrieve
Verbo regular: retrieve - retrieved- retrieved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd retrieve
you'd retrieve
he'd retrieve
we'd retrieve
you'd retrieve
they'd retrieve 	I'd be retrieving
you'd be retrieving
he'd be retrieving
we'd be retrieving
you'd be retrieving
they'd be retrieving	I should've retrieved
you should've retrieved
he should've retrieved
we should've retrieved
you should've retrieved
they should've retrieved	I should've been retrieving
you should've been retrieving
he should've been retrieving
we should've been retrieving
you should've been retrieving
they should've been retrieving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't retrieve
you shouldn't retrieve
he shouldn't retrieve
we shouldn't retrieve
you shouldn't retrieve
they shouldn't retrieve 	I shouldn't be retrieving
you shouldn't be retrieving
he shouldn't be retrieving
we shouldn't be retrieving
you shouldn't be retrieving
they shouldn't be retrieving	I shouldn't have retrieved
you shouldn't have retrieved
he shouldn't have retrieved
we shouldn't have retrieved
you shouldn't have retrieved
they shouldn't have retrieved	I shouldn't have been retrieving
you shouldn't have been retrieving
he shouldn't have been retrieving
we shouldn't have been retrieving
you shouldn't have been retrieving
they shouldn't have been retrieving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I retrieve?
should you retrieve?
should he retrieve?
should we retrieve?
should you retrieve?
should they retrieve? 	should I be retrieving?
should you be retrieving?
should he be retrieving?
should we be retrieving?
should you be retrieving?
should they be retrieving? 	should I have retrieved?
should you have retrieved?
should he have retrieved?
should we have retrieved?
should you have retrieved?
should they have retrieved? 	should I have been retrieving?
should you have been retrieving?
should he have been retrieving?
should we have been retrieving?
should you have been retrieving?
should they have been retrieving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I retrieve?
shouldn't you retrieve?
shouldn't he retrieve?
shouldn't we retrieve?
shouldn't you retrieve?
shouldn't they retrieve? 	shouldn't I be retrieving?
shouldn't you be retrieving?
shouldn't he be retrieving?
shouldn't we be retrieving?
shouldn't you be retrieving?
shouldn't they be retrieving? 	shouldn't I have retrieved?
shouldn't you have retrieved?
shouldn't he have retrieved?
shouldn't we have retrieved?
shouldn't you have retrieved?
shouldn't they have retrieved? 	shouldn't I have been retrieving?
shouldn't you have been retrieving?
shouldn't he have been retrieving?
shouldn't we have been retrieving?
shouldn't you have been retrieving?
shouldn't they have been retrieving?