should caution
Verbo regular: caution - cautioned- cautioned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd caution
you'd caution
he'd caution
we'd caution
you'd caution
they'd caution 	I'd be cautioning
you'd be cautioning
he'd be cautioning
we'd be cautioning
you'd be cautioning
they'd be cautioning	I should've cautioned
you should've cautioned
he should've cautioned
we should've cautioned
you should've cautioned
they should've cautioned	I should've been cautioning
you should've been cautioning
he should've been cautioning
we should've been cautioning
you should've been cautioning
they should've been cautioning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't caution
you shouldn't caution
he shouldn't caution
we shouldn't caution
you shouldn't caution
they shouldn't caution 	I shouldn't be cautioning
you shouldn't be cautioning
he shouldn't be cautioning
we shouldn't be cautioning
you shouldn't be cautioning
they shouldn't be cautioning	I shouldn't have cautioned
you shouldn't have cautioned
he shouldn't have cautioned
we shouldn't have cautioned
you shouldn't have cautioned
they shouldn't have cautioned	I shouldn't have been cautioning
you shouldn't have been cautioning
he shouldn't have been cautioning
we shouldn't have been cautioning
you shouldn't have been cautioning
they shouldn't have been cautioning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I caution?
should you caution?
should he caution?
should we caution?
should you caution?
should they caution? 	should I be cautioning?
should you be cautioning?
should he be cautioning?
should we be cautioning?
should you be cautioning?
should they be cautioning? 	should I have cautioned?
should you have cautioned?
should he have cautioned?
should we have cautioned?
should you have cautioned?
should they have cautioned? 	should I have been cautioning?
should you have been cautioning?
should he have been cautioning?
should we have been cautioning?
should you have been cautioning?
should they have been cautioning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I caution?
shouldn't you caution?
shouldn't he caution?
shouldn't we caution?
shouldn't you caution?
shouldn't they caution? 	shouldn't I be cautioning?
shouldn't you be cautioning?
shouldn't he be cautioning?
shouldn't we be cautioning?
shouldn't you be cautioning?
shouldn't they be cautioning? 	shouldn't I have cautioned?
shouldn't you have cautioned?
shouldn't he have cautioned?
shouldn't we have cautioned?
shouldn't you have cautioned?
shouldn't they have cautioned? 	shouldn't I have been cautioning?
shouldn't you have been cautioning?
shouldn't he have been cautioning?
shouldn't we have been cautioning?
shouldn't you have been cautioning?
shouldn't they have been cautioning?