English verb conjugation
MUST OVERTURN

Regular verb: overturn - overturned - overturned

Affirmation

Simple form	V-ing form
I must overturn you must overturn he must overturn we must overturn you must overturn they must overturn	I must be overturning you must be overturning he must be overturning we must be overturning you must be overturning they must be overturning
Perfect	V-ing perfect
I must have overturned you must have overturned he must have overturned we must have overturned you must have overturned they must have overturned	I must have been overturning you must have been overturning he must have been overturning we must have been overturning you must have been overturning they must have been overturning

Negation

Simple form	V-ing form
I must not overturn you must not overturn he must not overturn we must not overturn you must not overturn they must not overturn	I must not be overturning you must not be overturning he must not be overturning we must not be overturning you must not be overturning they must not be overturning
Perfect	V-ing perfect
I must not have overturned you must not have overturned he must not have overturned we must not have overturned you must not have overturned they must not have overturned	I must not have been overturning you must not have been overturning he must not have been overturning we must not have been overturning you must not have been overturning they must not have been overturning

Interrogative form

Simple form	V-ing form
must I overturn? must you overturn? must he overturn? must we overturn? must you overturn? must they overturn?	must I be overturning? must you be overturning? must he be overturning? must we be overturning? must you be overturning? must they be overturning?
Perfect	V-ing perfect
must I have overturned? must you have overturned? must he have overturned? must we have overturned? must you have overturned? must they have overturned?	must I have been overturning? must you have been overturning? must he have been overturning? must we have been overturning? must you have been overturning? must they have been overturning?

Interro-negative form

Simple form	V-ing form
must I not overturn? must you not overturn? must he not overturn? must we not overturn? must you not overturn? must they not overturn?	must I not be overturning? must you not be overturning? must he not be overturning? must we not be overturning? must you not be overturning? must they not be overturning?
Perfect	V-ing perfect
must I not have overturned? must you not have overturned? must he not have overturned? must we not have overturned? must you not have overturned? must they not have overturned?	must I not have been overturning? must you not have been overturning? must he not have been overturning? must we not have been overturning? must you not have been overturning? must they not have been overturning?