English verb conjugation
COULD PRECAUTION

Regular verb: precaution - precautioned - precautioned

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?