can precaution
Verbo regular: precaution - precautioned- precautioned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can precaution
you can precaution
she can precaution
we can precaution
you can precaution
they can precaution 	I can be precautioning
you can be precautioning
she can be precautioning
we can be precautioning
you can be precautioning
they can be precautioning	I can have precautioned
you can have precautioned
she can have precautioned
we can have precautioned
you can have precautioned
they can have precautioned	I can have been precautioning
you can have been precautioning
she can have been precautioning
we can have been precautioning
you can have been precautioning
they can have been precautioning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot precaution
you cannot precaution
she cannot precaution
we cannot precaution
you cannot precaution
they cannot precaution 	I cannot be precautioning
you cannot be precautioning
she cannot be precautioning
we cannot be precautioning
you cannot be precautioning
they cannot be precautioning	I cannot have precautioned
you cannot have precautioned
she cannot have precautioned
we cannot have precautioned
you cannot have precautioned
they cannot have precautioned	I cannot have been precautioning
you cannot have been precautioning
she cannot have been precautioning
we cannot have been precautioning
you cannot have been precautioning
they cannot have been precautioning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I precaution?
can you precaution?
can she precaution?
can we precaution?
can you precaution?
can they precaution? 	can I be precautioning?
can you be precautioning?
can she be precautioning?
can we be precautioning?
can you be precautioning?
can they be precautioning? 	can I have precautioned?
can you have precautioned?
can she have precautioned?
can we have precautioned?
can you have precautioned?
can they have precautioned? 	can I have been precautioning?
can you have been precautioning?
can she have been precautioning?
can we have been precautioning?
can you have been precautioning?
can they have been precautioning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not precaution?
can you not precaution?
can she not precaution?
can we not precaution?
can you not precaution?
can they not precaution? 	can I not be precautioning?
can you not be precautioning?
can she not be precautioning?
can we not be precautioning?
can you not be precautioning?
can they not be precautioning? 	can I not have precautioned?
can you not have precautioned?
can she not have precautioned?
can we not have precautioned?
can you not have precautioned?
can they not have precautioned? 	can I not have been precautioning?
can you not have been precautioning?
can she not have been precautioning?
can we not have been precautioning?
can you not have been precautioning?
can they not have been precautioning?