could precaution
Verbe régulier : precaution - precautioned- precautioned

Affirmation 	
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I could precaution
you could precaution
she could precaution
we could precaution
you could precaution
they could precaution 	I could be precautioning
you could be precautioning
she could be precautioning
we could be precautioning
you could be precautioning
they could be precautioning	I could have precautioned
you could have precautioned
she could have precautioned
we could have precautioned
you could have precautioned
they could have precautioned	I could have been precautioning
you could have been precautioning
she could have been precautioning
we could have been precautioning
you could have been precautioning
they could have been precautioning	

Négation 	
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I couldn't precaution
you couldn't precaution
she couldn't precaution
we couldn't precaution
you couldn't precaution
they couldn't precaution 	I couldn't be precautioning
you couldn't be precautioning
she couldn't be precautioning
we couldn't be precautioning
you couldn't be precautioning
they couldn't be precautioning	I couldn't have precautioned
you couldn't have precautioned
she couldn't have precautioned
we couldn't have precautioned
you couldn't have precautioned
they couldn't have precautioned	I couldn't have been precautioning
you couldn't have been precautioning
she couldn't have been precautioning
we couldn't have been precautioning
you couldn't have been precautioning
they couldn't have been precautioning	

Forme interrogative 	
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could I precaution?
could you precaution?
could she precaution?
could we precaution?
could you precaution?
could they precaution? 	could I be precautioning?
could you be precautioning?
could she be precautioning?
could we be precautioning?
could you be precautioning?
could they be precautioning? 	could I have precautioned?
could you have precautioned?
could she have precautioned?
could we have precautioned?
could you have precautioned?
could they have precautioned? 	could I have been precautioning?
could you have been precautioning?
could she have been precautioning?
could we have been precautioning?
could you have been precautioning?
could they have been precautioning? 	

Forme interro-négative 	
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couldn't I precaution?
couldn't you precaution?
couldn't she precaution?
couldn't we precaution?
couldn't you precaution?
couldn't they precaution? 	couldn't I be precautioning?
couldn't you be precautioning?
couldn't she be precautioning?
couldn't we be precautioning?
couldn't you be precautioning?
couldn't they be precautioning? 	couldn't I have precautioned?
couldn't you have precautioned?
couldn't she have precautioned?
couldn't we have precautioned?
couldn't you have precautioned?
couldn't they have precautioned? 	couldn't I have been precautioning?
couldn't you have been precautioning?
couldn't she have been precautioning?
couldn't we have been precautioning?
couldn't you have been precautioning?
couldn't they have been precautioning?