should precaution
Verbo regular: precaution - precautioned- precautioned

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

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not precaution
you should not precaution
he should not precaution
we should not precaution
you should not precaution
they should not precaution 	I should not be precautioning
you should not be precautioning
he should not be precautioning
we should not be precautioning
you should not be precautioning
they should not be precautioning	I should not have precautioned
you should not have precautioned
he should not have precautioned
we should not have precautioned
you should not have precautioned
they should not have precautioned	I should not have been precautioning
you should not have been precautioning
he should not have been precautioning
we should not have been precautioning
you should not have been precautioning
they should not have been precautioning	

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

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