English verb conjugation
MUST KITTEN

Regular verb: kitten - kittened - kittened

Affirmation

Simple form	V-ing form
I must kitten you must kitten she must kitten we must kitten you must kitten they must kitten	I must be kittening you must be kittening she 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 she 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 she 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 mustn't kitten you mustn't kitten she mustn't kitten we mustn't kitten you mustn't kitten they mustn't kitten	I mustn't be kittening you mustn't be kittening she mustn't be kittening we mustn't be kittening you mustn't be kittening they mustn't be kittening
Perfect	V-ing perfect
I mustn't have kittened you mustn't have kittened she mustn't have kittened we mustn't have kittened you mustn't have kittened they mustn't have kittened	I mustn't have been kittening you mustn't have been kittening she mustn't have been kittening we mustn't have been kittening you mustn't have been kittening they mustn't have been kittening

Interrogative form

Simple form	V-ing form
must I kitten? must you kitten? must she kitten? must we kitten? must you kitten? must they kitten?	must I be kittening? must you be kittening? must she 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 she 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 she 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
mustn't I kitten? mustn't you kitten? mustn't she kitten? mustn't we kitten? mustn't you kitten? mustn't they kitten?	mustn't I be kittening? mustn't you be kittening? mustn't she be kittening? mustn't we be kittening? mustn't you be kittening? mustn't they be kittening?
Perfect	V-ing perfect
mustn't I have kittened? mustn't you have kittened? mustn't she have kittened? mustn't we have kittened? mustn't you have kittened? mustn't they have kittened?	mustn't I have been kittening? mustn't you have been kittening? mustn't she have been kittening? mustn't we have been kittening? mustn't you have been kittening? mustn't they have been kittening?