I must bung you must bung he must bung we must bung you must bung they must bung
V-ing form
I must be bunging you must be bunging he must be bunging we must be bunging you must be bunging they must be bunging
Perfect
I must have bunged you must have bunged he must have bunged we must have bunged you must have bunged they must have bunged
V-ing perfect
I must have been bunging you must have been bunging he must have been bunging we must have been bunging you must have been bunging they must have been bunging
Negation
Simple form
I must not bung you must not bung he must not bung we must not bung you must not bung they must not bung
V-ing form
I must not be bunging you must not be bunging he must not be bunging we must not be bunging you must not be bunging they must not be bunging
Perfect
I must not have bunged you must not have bunged he must not have bunged we must not have bunged you must not have bunged they must not have bunged
V-ing perfect
I must not have been bunging you must not have been bunging he must not have been bunging we must not have been bunging you must not have been bunging they must not have been bunging
Interrogative form
Simple form
must I bung? must you bung? must he bung? must we bung? must you bung? must they bung?
V-ing form
must I be bunging? must you be bunging? must he be bunging? must we be bunging? must you be bunging? must they be bunging?
Perfect
must I have bunged? must you have bunged? must he have bunged? must we have bunged? must you have bunged? must they have bunged?
V-ing perfect
must I have been bunging? must you have been bunging? must he have been bunging? must we have been bunging? must you have been bunging? must they have been bunging?
Interro-negative form
Simple form
must I not bung? must you not bung? must he not bung? must we not bung? must you not bung? must they not bung?
V-ing form
must I not be bunging? must you not be bunging? must he not be bunging? must we not be bunging? must you not be bunging? must they not be bunging?
Perfect
must I not have bunged? must you not have bunged? must he not have bunged? must we not have bunged? must you not have bunged? must they not have bunged?
V-ing perfect
must I not have been bunging? must you not have been bunging? must he not have been bunging? must we not have been bunging? must you not have been bunging? must they not have been bunging?