I must somersault you must somersault he must somersault we must somersault you must somersault they must somersault
V-ing form
I must be somersaulting you must be somersaulting he must be somersaulting we must be somersaulting you must be somersaulting they must be somersaulting
Perfect
I must have somersaulted you must have somersaulted he must have somersaulted we must have somersaulted you must have somersaulted they must have somersaulted
V-ing perfect
I must have been somersaulting you must have been somersaulting he must have been somersaulting we must have been somersaulting you must have been somersaulting they must have been somersaulting
Negation
Simple form
I must not somersault you must not somersault he must not somersault we must not somersault you must not somersault they must not somersault
V-ing form
I must not be somersaulting you must not be somersaulting he must not be somersaulting we must not be somersaulting you must not be somersaulting they must not be somersaulting
Perfect
I must not have somersaulted you must not have somersaulted he must not have somersaulted we must not have somersaulted you must not have somersaulted they must not have somersaulted
V-ing perfect
I must not have been somersaulting you must not have been somersaulting he must not have been somersaulting we must not have been somersaulting you must not have been somersaulting they must not have been somersaulting
Interrogative form
Simple form
must I somersault? must you somersault? must he somersault? must we somersault? must you somersault? must they somersault?
V-ing form
must I be somersaulting? must you be somersaulting? must he be somersaulting? must we be somersaulting? must you be somersaulting? must they be somersaulting?
Perfect
must I have somersaulted? must you have somersaulted? must he have somersaulted? must we have somersaulted? must you have somersaulted? must they have somersaulted?
V-ing perfect
must I have been somersaulting? must you have been somersaulting? must he have been somersaulting? must we have been somersaulting? must you have been somersaulting? must they have been somersaulting?
Interro-negative form
Simple form
must I not somersault? must you not somersault? must he not somersault? must we not somersault? must you not somersault? must they not somersault?
V-ing form
must I not be somersaulting? must you not be somersaulting? must he not be somersaulting? must we not be somersaulting? must you not be somersaulting? must they not be somersaulting?
Perfect
must I not have somersaulted? must you not have somersaulted? must he not have somersaulted? must we not have somersaulted? must you not have somersaulted? must they not have somersaulted?
V-ing perfect
must I not have been somersaulting? must you not have been somersaulting? must he not have been somersaulting? must we not have been somersaulting? must you not have been somersaulting? must they not have been somersaulting?