English verb conjugation
MUST PRECAUTION

Regular verb: precaution - precautioned - precautioned

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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