must necropsy
Regular verb: necropsy - necropsied- necropsied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must necropsy
you must necropsy
he must necropsy
we must necropsy
you must necropsy
they must necropsy 	I must be necropsying
you must be necropsying
he must be necropsying
we must be necropsying
you must be necropsying
they must be necropsying	I must have necropsied
you must have necropsied
he must have necropsied
we must have necropsied
you must have necropsied
they must have necropsied	I must have been necropsying
you must have been necropsying
he must have been necropsying
we must have been necropsying
you must have been necropsying
they must have been necropsying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not necropsy
you must not necropsy
he must not necropsy
we must not necropsy
you must not necropsy
they must not necropsy 	I must not be necropsying
you must not be necropsying
he must not be necropsying
we must not be necropsying
you must not be necropsying
they must not be necropsying	I must not have necropsied
you must not have necropsied
he must not have necropsied
we must not have necropsied
you must not have necropsied
they must not have necropsied	I must not have been necropsying
you must not have been necropsying
he must not have been necropsying
we must not have been necropsying
you must not have been necropsying
they must not have been necropsying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I necropsy?
must you necropsy?
must he necropsy?
must we necropsy?
must you necropsy?
must they necropsy? 	must I be necropsying?
must you be necropsying?
must he be necropsying?
must we be necropsying?
must you be necropsying?
must they be necropsying? 	must I have necropsied?
must you have necropsied?
must he have necropsied?
must we have necropsied?
must you have necropsied?
must they have necropsied? 	must I have been necropsying?
must you have been necropsying?
must he have been necropsying?
must we have been necropsying?
must you have been necropsying?
must they have been necropsying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not necropsy?
must you not necropsy?
must he not necropsy?
must we not necropsy?
must you not necropsy?
must they not necropsy? 	must I not be necropsying?
must you not be necropsying?
must he not be necropsying?
must we not be necropsying?
must you not be necropsying?
must they not be necropsying? 	must I not have necropsied?
must you not have necropsied?
must he not have necropsied?
must we not have necropsied?
must you not have necropsied?
must they not have necropsied? 	must I not have been necropsying?
must you not have been necropsying?
must he not have been necropsying?
must we not have been necropsying?
must you not have been necropsying?
must they not have been necropsying?