English verb conjugation
MUST VIVIFY

Regular verb: vivify - vivified - vivified

Affirmation

Simple form	V-ing form
I must vivify you must vivify he must vivify we must vivify you must vivify they must vivify	I must be vivifying you must be vivifying he must be vivifying we must be vivifying you must be vivifying they must be vivifying
Perfect	V-ing perfect
I must have vivified you must have vivified he must have vivified we must have vivified you must have vivified they must have vivified	I must have been vivifying you must have been vivifying he must have been vivifying we must have been vivifying you must have been vivifying they must have been vivifying

Negation

Simple form	V-ing form
I must not vivify you must not vivify he must not vivify we must not vivify you must not vivify they must not vivify	I must not be vivifying you must not be vivifying he must not be vivifying we must not be vivifying you must not be vivifying they must not be vivifying
Perfect	V-ing perfect
I must not have vivified you must not have vivified he must not have vivified we must not have vivified you must not have vivified they must not have vivified	I must not have been vivifying you must not have been vivifying he must not have been vivifying we must not have been vivifying you must not have been vivifying they must not have been vivifying

Interrogative form

Simple form	V-ing form
must I vivify? must you vivify? must he vivify? must we vivify? must you vivify? must they vivify?	must I be vivifying? must you be vivifying? must he be vivifying? must we be vivifying? must you be vivifying? must they be vivifying?
Perfect	V-ing perfect
must I have vivified? must you have vivified? must he have vivified? must we have vivified? must you have vivified? must they have vivified?	must I have been vivifying? must you have been vivifying? must he have been vivifying? must we have been vivifying? must you have been vivifying? must they have been vivifying?

Interro-negative form

Simple form	V-ing form
must I not vivify? must you not vivify? must he not vivify? must we not vivify? must you not vivify? must they not vivify?	must I not be vivifying? must you not be vivifying? must he not be vivifying? must we not be vivifying? must you not be vivifying? must they not be vivifying?
Perfect	V-ing perfect
must I not have vivified? must you not have vivified? must he not have vivified? must we not have vivified? must you not have vivified? must they not have vivified?	must I not have been vivifying? must you not have been vivifying? must he not have been vivifying? must we not have been vivifying? must you not have been vivifying? must they not have been vivifying?