must somersault
Regular verb: somersault - somersaulted- somersaulted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must somersault
you must somersault
he must somersault
we must somersault
you must somersault
they must somersault 	I must be somersaulting
you must be somersaulting
he must be somersaulting
we must be somersaulting
you must be somersaulting
they must be somersaulting	I must have somersaulted
you must have somersaulted
he must have somersaulted
we must have somersaulted
you must have somersaulted
they must have somersaulted	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 	V-ing form 	Perfect 	V-ing perfect 	
I must not somersault
you must not somersault
he must not somersault
we must not somersault
you must not somersault
they must not somersault 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
must I somersault?
must you somersault?
must he somersault?
must we somersault?
must you somersault?
must they somersault? 	must I be somersaulting?
must you be somersaulting?
must he be somersaulting?
must we be somersaulting?
must you be somersaulting?
must they be somersaulting? 	must I have somersaulted?
must you have somersaulted?
must he have somersaulted?
must we have somersaulted?
must you have somersaulted?
must they have somersaulted? 	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 	V-ing form 	Perfect 	V-ing perfect 	
must I not somersault?
must you not somersault?
must he not somersault?
must we not somersault?
must you not somersault?
must they not somersault? 	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? 	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? 	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?