English verb conjugation
MUST CAVIL

Regular verb: cavil - cavilled - cavilled

Affirmation

Simple form	V-ing form
I must cavil you must cavil he must cavil we must cavil you must cavil they must cavil	I must be cavilling you must be cavilling he must be cavilling we must be cavilling you must be cavilling they must be cavilling
Perfect	V-ing perfect
I must have cavilled you must have cavilled he must have cavilled we must have cavilled you must have cavilled they must have cavilled	I must have been cavilling you must have been cavilling he must have been cavilling we must have been cavilling you must have been cavilling they must have been cavilling

Negation

Simple form	V-ing form
I must not cavil you must not cavil he must not cavil we must not cavil you must not cavil they must not cavil	I must not be cavilling you must not be cavilling he must not be cavilling we must not be cavilling you must not be cavilling they must not be cavilling
Perfect	V-ing perfect
I must not have cavilled you must not have cavilled he must not have cavilled we must not have cavilled you must not have cavilled they must not have cavilled	I must not have been cavilling you must not have been cavilling he must not have been cavilling we must not have been cavilling you must not have been cavilling they must not have been cavilling

Interrogative form

Simple form	V-ing form
must I cavil? must you cavil? must he cavil? must we cavil? must you cavil? must they cavil?	must I be cavilling? must you be cavilling? must he be cavilling? must we be cavilling? must you be cavilling? must they be cavilling?
Perfect	V-ing perfect
must I have cavilled? must you have cavilled? must he have cavilled? must we have cavilled? must you have cavilled? must they have cavilled?	must I have been cavilling? must you have been cavilling? must he have been cavilling? must we have been cavilling? must you have been cavilling? must they have been cavilling?

Interro-negative form

Simple form	V-ing form
must I not cavil? must you not cavil? must he not cavil? must we not cavil? must you not cavil? must they not cavil?	must I not be cavilling? must you not be cavilling? must he not be cavilling? must we not be cavilling? must you not be cavilling? must they not be cavilling?
Perfect	V-ing perfect
must I not have cavilled? must you not have cavilled? must he not have cavilled? must we not have cavilled? must you not have cavilled? must they not have cavilled?	must I not have been cavilling? must you not have been cavilling? must he not have been cavilling? must we not have been cavilling? must you not have been cavilling? must they not have been cavilling?