English verb conjugation
MUST KITTEN

Regular verb: kitten - kittened - kittened

Affirmation

Simple form	V-ing form
I must kitten you must kitten he must kitten we must kitten you must kitten they must kitten	I must be kittening you must be kittening he must be kittening we must be kittening you must be kittening they must be kittening
Perfect	V-ing perfect
I must have kittened you must have kittened he must have kittened we must have kittened you must have kittened they must have kittened	I must have been kittening you must have been kittening he must have been kittening we must have been kittening you must have been kittening they must have been kittening

Negation

Simple form	V-ing form
I must not kitten you must not kitten he must not kitten we must not kitten you must not kitten they must not kitten	I must not be kittening you must not be kittening he must not be kittening we must not be kittening you must not be kittening they must not be kittening
Perfect	V-ing perfect
I must not have kittened you must not have kittened he must not have kittened we must not have kittened you must not have kittened they must not have kittened	I must not have been kittening you must not have been kittening he must not have been kittening we must not have been kittening you must not have been kittening they must not have been kittening

Interrogative form

Simple form	V-ing form
must I kitten? must you kitten? must he kitten? must we kitten? must you kitten? must they kitten?	must I be kittening? must you be kittening? must he be kittening? must we be kittening? must you be kittening? must they be kittening?
Perfect	V-ing perfect
must I have kittened? must you have kittened? must he have kittened? must we have kittened? must you have kittened? must they have kittened?	must I have been kittening? must you have been kittening? must he have been kittening? must we have been kittening? must you have been kittening? must they have been kittening?

Interro-negative form

Simple form	V-ing form
must I not kitten? must you not kitten? must he not kitten? must we not kitten? must you not kitten? must they not kitten?	must I not be kittening? must you not be kittening? must he not be kittening? must we not be kittening? must you not be kittening? must they not be kittening?
Perfect	V-ing perfect
must I not have kittened? must you not have kittened? must he not have kittened? must we not have kittened? must you not have kittened? must they not have kittened?	must I not have been kittening? must you not have been kittening? must he not have been kittening? must we not have been kittening? must you not have been kittening? must they not have been kittening?