English verb conjugation
MUST KEN

Regular verb: ken - kened - kened

Affirmation

Simple form	V-ing form
I must ken you must ken he must ken we must ken you must ken they must ken	I must be kening you must be kening he must be kening we must be kening you must be kening they must be kening
Perfect	V-ing perfect
I must have kened you must have kened he must have kened we must have kened you must have kened they must have kened	I must have been kening you must have been kening he must have been kening we must have been kening you must have been kening they must have been kening

Negation

Simple form	V-ing form
I mustn't ken you mustn't ken he mustn't ken we mustn't ken you mustn't ken they mustn't ken	I mustn't be kening you mustn't be kening he mustn't be kening we mustn't be kening you mustn't be kening they mustn't be kening
Perfect	V-ing perfect
I mustn't have kened you mustn't have kened he mustn't have kened we mustn't have kened you mustn't have kened they mustn't have kened	I mustn't have been kening you mustn't have been kening he mustn't have been kening we mustn't have been kening you mustn't have been kening they mustn't have been kening

Interrogative form

Simple form	V-ing form
must I ken? must you ken? must he ken? must we ken? must you ken? must they ken?	must I be kening? must you be kening? must he be kening? must we be kening? must you be kening? must they be kening?
Perfect	V-ing perfect
must I have kened? must you have kened? must he have kened? must we have kened? must you have kened? must they have kened?	must I have been kening? must you have been kening? must he have been kening? must we have been kening? must you have been kening? must they have been kening?

Interro-negative form

Simple form	V-ing form
mustn't I ken? mustn't you ken? mustn't he ken? mustn't we ken? mustn't you ken? mustn't they ken?	mustn't I be kening? mustn't you be kening? mustn't he be kening? mustn't we be kening? mustn't you be kening? mustn't they be kening?
Perfect	V-ing perfect
mustn't I have kened? mustn't you have kened? mustn't he have kened? mustn't we have kened? mustn't you have kened? mustn't they have kened?	mustn't I have been kening? mustn't you have been kening? mustn't he have been kening? mustn't we have been kening? mustn't you have been kening? mustn't they have been kening?