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
he can precaution
we can precaution
you can precaution
they can precaution 	I can be precautioning
you can be precautioning
he can be precautioning
we can be precautioning
you can be precautioning
they can be precautioning	I can have precautioned
you can have precautioned
he 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
he 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 can't precaution
you can't precaution
he can't precaution
we can't precaution
you can't precaution
they can't precaution 	I can't be precautioning
you can't be precautioning
he can't be precautioning
we can't be precautioning
you can't be precautioning
they can't be precautioning	I can't have precautioned
you can't have precautioned
he can't have precautioned
we can't have precautioned
you can't have precautioned
they can't have precautioned	I can't have been precautioning
you can't have been precautioning
he can't have been precautioning
we can't have been precautioning
you can't have been precautioning
they can't have been precautioning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I precaution?
can you precaution?
can he precaution?
can we precaution?
can you precaution?
can they precaution? 	can I be precautioning?
can you be precautioning?
can he be precautioning?
can we be precautioning?
can you be precautioning?
can they be precautioning? 	can I have precautioned?
can you have precautioned?
can he 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 he 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't I precaution?
can't you precaution?
can't he precaution?
can't we precaution?
can't you precaution?
can't they precaution? 	can't I be precautioning?
can't you be precautioning?
can't he be precautioning?
can't we be precautioning?
can't you be precautioning?
can't they be precautioning? 	can't I have precautioned?
can't you have precautioned?
can't he have precautioned?
can't we have precautioned?
can't you have precautioned?
can't they have precautioned? 	can't I have been precautioning?
can't you have been precautioning?
can't he have been precautioning?
can't we have been precautioning?
can't you have been precautioning?
can't they have been precautioning?