can caution
Verbo regular: caution - cautioned- cautioned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can caution
you can caution
she can caution
we can caution
you can caution
they can caution 	I can be cautioning
you can be cautioning
she can be cautioning
we can be cautioning
you can be cautioning
they can be cautioning	I can have cautioned
you can have cautioned
she can have cautioned
we can have cautioned
you can have cautioned
they can have cautioned	I can have been cautioning
you can have been cautioning
she can have been cautioning
we can have been cautioning
you can have been cautioning
they can have been cautioning	

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

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

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