English verb conjugation
MUST SHAKE

Irregular verb: shake - shook - shaken

Affirmation

Simple form	V-ing form
I must shake you must shake he must shake we must shake you must shake they must shake	I must be shaking you must be shaking he must be shaking we must be shaking you must be shaking they must be shaking
Perfect	V-ing perfect
I must have shaken you must have shaken he must have shaken we must have shaken you must have shaken they must have shaken	I must have been shaking you must have been shaking he must have been shaking we must have been shaking you must have been shaking they must have been shaking

Negation

Simple form	V-ing form
I mustn't shake you mustn't shake he mustn't shake we mustn't shake you mustn't shake they mustn't shake	I mustn't be shaking you mustn't be shaking he mustn't be shaking we mustn't be shaking you mustn't be shaking they mustn't be shaking
Perfect	V-ing perfect
I mustn't have shaken you mustn't have shaken he mustn't have shaken we mustn't have shaken you mustn't have shaken they mustn't have shaken	I mustn't have been shaking you mustn't have been shaking he mustn't have been shaking we mustn't have been shaking you mustn't have been shaking they mustn't have been shaking

Interrogative form

Simple form	V-ing form
must I shake? must you shake? must he shake? must we shake? must you shake? must they shake?	must I be shaking? must you be shaking? must he be shaking? must we be shaking? must you be shaking? must they be shaking?
Perfect	V-ing perfect
must I have shaken? must you have shaken? must he have shaken? must we have shaken? must you have shaken? must they have shaken?	must I have been shaking? must you have been shaking? must he have been shaking? must we have been shaking? must you have been shaking? must they have been shaking?

Interro-negative form

Simple form	V-ing form
mustn't I shake? mustn't you shake? mustn't he shake? mustn't we shake? mustn't you shake? mustn't they shake?	mustn't I be shaking? mustn't you be shaking? mustn't he be shaking? mustn't we be shaking? mustn't you be shaking? mustn't they be shaking?
Perfect	V-ing perfect
mustn't I have shaken? mustn't you have shaken? mustn't he have shaken? mustn't we have shaken? mustn't you have shaken? mustn't they have shaken?	mustn't I have been shaking? mustn't you have been shaking? mustn't he have been shaking? mustn't we have been shaking? mustn't you have been shaking? mustn't they have been shaking?