English verb conjugation
MUST OK

Regular verb: ok - oked - oked

Affirmation

Simple form	V-ing form
I must ok you must ok he must ok we must ok you must ok they must ok	I must be oking you must be oking he must be oking we must be oking you must be oking they must be oking
Perfect	V-ing perfect
I must have oked you must have oked he must have oked we must have oked you must have oked they must have oked	I must have been oking you must have been oking he must have been oking we must have been oking you must have been oking they must have been oking

Negation

Simple form	V-ing form
I mustn't ok you mustn't ok he mustn't ok we mustn't ok you mustn't ok they mustn't ok	I mustn't be oking you mustn't be oking he mustn't be oking we mustn't be oking you mustn't be oking they mustn't be oking
Perfect	V-ing perfect
I mustn't have oked you mustn't have oked he mustn't have oked we mustn't have oked you mustn't have oked they mustn't have oked	I mustn't have been oking you mustn't have been oking he mustn't have been oking we mustn't have been oking you mustn't have been oking they mustn't have been oking

Interrogative form

Simple form	V-ing form
must I ok? must you ok? must he ok? must we ok? must you ok? must they ok?	must I be oking? must you be oking? must he be oking? must we be oking? must you be oking? must they be oking?
Perfect	V-ing perfect
must I have oked? must you have oked? must he have oked? must we have oked? must you have oked? must they have oked?	must I have been oking? must you have been oking? must he have been oking? must we have been oking? must you have been oking? must they have been oking?

Interro-negative form

Simple form	V-ing form
mustn't I ok? mustn't you ok? mustn't he ok? mustn't we ok? mustn't you ok? mustn't they ok?	mustn't I be oking? mustn't you be oking? mustn't he be oking? mustn't we be oking? mustn't you be oking? mustn't they be oking?
Perfect	V-ing perfect
mustn't I have oked? mustn't you have oked? mustn't he have oked? mustn't we have oked? mustn't you have oked? mustn't they have oked?	mustn't I have been oking? mustn't you have been oking? mustn't he have been oking? mustn't we have been oking? mustn't you have been oking? mustn't they have been oking?