English verb conjugation
MUST QUAKE

Regular verb: quake - quaked - quaked

Affirmation

Simple form	V-ing form
I must quake you must quake he must quake we must quake you must quake they must quake	I must be quaking you must be quaking he must be quaking we must be quaking you must be quaking they must be quaking
Perfect	V-ing perfect
I must have quaked you must have quaked he must have quaked we must have quaked you must have quaked they must have quaked	I must have been quaking you must have been quaking he must have been quaking we must have been quaking you must have been quaking they must have been quaking

Negation

Simple form	V-ing form
I must not quake you must not quake he must not quake we must not quake you must not quake they must not quake	I must not be quaking you must not be quaking he must not be quaking we must not be quaking you must not be quaking they must not be quaking
Perfect	V-ing perfect
I must not have quaked you must not have quaked he must not have quaked we must not have quaked you must not have quaked they must not have quaked	I must not have been quaking you must not have been quaking he must not have been quaking we must not have been quaking you must not have been quaking they must not have been quaking

Interrogative form

Simple form	V-ing form
must I quake? must you quake? must he quake? must we quake? must you quake? must they quake?	must I be quaking? must you be quaking? must he be quaking? must we be quaking? must you be quaking? must they be quaking?
Perfect	V-ing perfect
must I have quaked? must you have quaked? must he have quaked? must we have quaked? must you have quaked? must they have quaked?	must I have been quaking? must you have been quaking? must he have been quaking? must we have been quaking? must you have been quaking? must they have been quaking?

Interro-negative form

Simple form	V-ing form
must I not quake? must you not quake? must he not quake? must we not quake? must you not quake? must they not quake?	must I not be quaking? must you not be quaking? must he not be quaking? must we not be quaking? must you not be quaking? must they not be quaking?
Perfect	V-ing perfect
must I not have quaked? must you not have quaked? must he not have quaked? must we not have quaked? must you not have quaked? must they not have quaked?	must I not have been quaking? must you not have been quaking? must he not have been quaking? must we not have been quaking? must you not have been quaking? must they not have been quaking?