English verb conjugation
SHOULD PRECAUTION

Regular verb: precaution - precautioned - precautioned

Affirmation

Simple form	V-ing form
I'd precaution you'd precaution she'd precaution we'd precaution you'd precaution they'd precaution	I'd be precautioning you'd be precautioning she'd be precautioning we'd be precautioning you'd be precautioning they'd be precautioning
Perfect	V-ing perfect
I should've precautioned you should've precautioned she should've precautioned we should've precautioned you should've precautioned they should've precautioned	I should've been precautioning you should've been precautioning she should've been precautioning we should've been precautioning you should've been precautioning they should've been precautioning

Negation

Simple form	V-ing form
I shouldn't precaution you shouldn't precaution she shouldn't precaution we shouldn't precaution you shouldn't precaution they shouldn't precaution	I shouldn't be precautioning you shouldn't be precautioning she shouldn't be precautioning we shouldn't be precautioning you shouldn't be precautioning they shouldn't be precautioning
Perfect	V-ing perfect
I shouldn't have precautioned you shouldn't have precautioned she shouldn't have precautioned we shouldn't have precautioned you shouldn't have precautioned they shouldn't have precautioned	I shouldn't have been precautioning you shouldn't have been precautioning she shouldn't have been precautioning we shouldn't have been precautioning you shouldn't have been precautioning they shouldn't have been precautioning

Interrogative form

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

Interro-negative form

Simple form	V-ing form
shouldn't I precaution? shouldn't you precaution? shouldn't she precaution? shouldn't we precaution? shouldn't you precaution? shouldn't they precaution?	shouldn't I be precautioning? shouldn't you be precautioning? shouldn't she be precautioning? shouldn't we be precautioning? shouldn't you be precautioning? shouldn't they be precautioning?
Perfect	V-ing perfect
shouldn't I have precautioned? shouldn't you have precautioned? shouldn't she have precautioned? shouldn't we have precautioned? shouldn't you have precautioned? shouldn't they have precautioned?	shouldn't I have been precautioning? shouldn't you have been precautioning? shouldn't she have been precautioning? shouldn't we have been precautioning? shouldn't you have been precautioning? shouldn't they have been precautioning?