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 must not shake you must not shake he must not shake we must not shake you must not shake they must not shake	I must not be shaking you must not be shaking he must not be shaking we must not be shaking you must not be shaking they must not be shaking
Perfect	V-ing perfect
I must not have shaken you must not have shaken he must not have shaken we must not have shaken you must not have shaken they must not have shaken	I must not have been shaking you must not have been shaking he must not have been shaking we must not have been shaking you must not have been shaking they must not 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
must I not shake? must you not shake? must he not shake? must we not shake? must you not shake? must they not shake?	must I not be shaking? must you not be shaking? must he not be shaking? must we not be shaking? must you not be shaking? must they not be shaking?
Perfect	V-ing perfect
must I not have shaken? must you not have shaken? must he not have shaken? must we not have shaken? must you not have shaken? must they not have shaken?	must I not have been shaking? must you not have been shaking? must he not have been shaking? must we not have been shaking? must you not have been shaking? must they not have been shaking?