should return
Verbo regular: return - returned- returned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd return
you'd return
he'd return
we'd return
you'd return
they'd return 	I'd be returning
you'd be returning
he'd be returning
we'd be returning
you'd be returning
they'd be returning	I should've returned
you should've returned
he should've returned
we should've returned
you should've returned
they should've returned	I should've been returning
you should've been returning
he should've been returning
we should've been returning
you should've been returning
they should've been returning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't return
you shouldn't return
he shouldn't return
we shouldn't return
you shouldn't return
they shouldn't return 	I shouldn't be returning
you shouldn't be returning
he shouldn't be returning
we shouldn't be returning
you shouldn't be returning
they shouldn't be returning	I shouldn't have returned
you shouldn't have returned
he shouldn't have returned
we shouldn't have returned
you shouldn't have returned
they shouldn't have returned	I shouldn't have been returning
you shouldn't have been returning
he shouldn't have been returning
we shouldn't have been returning
you shouldn't have been returning
they shouldn't have been returning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I return?
should you return?
should he return?
should we return?
should you return?
should they return? 	should I be returning?
should you be returning?
should he be returning?
should we be returning?
should you be returning?
should they be returning? 	should I have returned?
should you have returned?
should he have returned?
should we have returned?
should you have returned?
should they have returned? 	should I have been returning?
should you have been returning?
should he have been returning?
should we have been returning?
should you have been returning?
should they have been returning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I return?
shouldn't you return?
shouldn't he return?
shouldn't we return?
shouldn't you return?
shouldn't they return? 	shouldn't I be returning?
shouldn't you be returning?
shouldn't he be returning?
shouldn't we be returning?
shouldn't you be returning?
shouldn't they be returning? 	shouldn't I have returned?
shouldn't you have returned?
shouldn't he have returned?
shouldn't we have returned?
shouldn't you have returned?
shouldn't they have returned? 	shouldn't I have been returning?
shouldn't you have been returning?
shouldn't he have been returning?
shouldn't we have been returning?
shouldn't you have been returning?
shouldn't they have been returning?