English verb conjugation
COULD PRECAUTION

Regular verb: precaution - precautioned - precautioned

Affirmation

Simple form	V-ing form
I could precaution you could precaution he could precaution we could precaution you could precaution they could precaution	I could be precautioning you could be precautioning he could be precautioning we could be precautioning you could be precautioning they could be precautioning
Perfect	V-ing perfect
I could have precautioned you could have precautioned he 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 he could have been precautioning we could have been precautioning you could have been precautioning they could have been precautioning

Negation

Simple form	V-ing form
I could not precaution you could not precaution he could not precaution we could not precaution you could not precaution they could not precaution	I could not be precautioning you could not be precautioning he could not be precautioning we could not be precautioning you could not be precautioning they could not be precautioning
Perfect	V-ing perfect
I could not have precautioned you could not have precautioned he could not have precautioned we could not have precautioned you could not have precautioned they could not have precautioned	I could not have been precautioning you could not have been precautioning he could not have been precautioning we could not have been precautioning you could not have been precautioning they could not have been precautioning

Interrogative form

Simple form	V-ing form
could I precaution? could you precaution? could he precaution? could we precaution? could you precaution? could they precaution?	could I be precautioning? could you be precautioning? could he be precautioning? could we be precautioning? could you be precautioning? could they be precautioning?
Perfect	V-ing perfect
could I have precautioned? could you have precautioned? could he 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 he have been precautioning? could we have been precautioning? could you have been precautioning? could they have been precautioning?

Interro-negative form

Simple form	V-ing form
could I not precaution? could you not precaution? could he not precaution? could we not precaution? could you not precaution? could they not precaution?	could I not be precautioning? could you not be precautioning? could he not be precautioning? could we not be precautioning? could you not be precautioning? could they not be precautioning?
Perfect	V-ing perfect
could I not have precautioned? could you not have precautioned? could he not have precautioned? could we not have precautioned? could you not have precautioned? could they not have precautioned?	could I not have been precautioning? could you not have been precautioning? could he not have been precautioning? could we not have been precautioning? could you not have been precautioning? could they not have been precautioning?