I must autopsy you must autopsy he must autopsy we must autopsy you must autopsy they must autopsy
V-ing form
I must be autopsying you must be autopsying he must be autopsying we must be autopsying you must be autopsying they must be autopsying
Perfect
I must have autopsied you must have autopsied he must have autopsied we must have autopsied you must have autopsied they must have autopsied
V-ing perfect
I must have been autopsying you must have been autopsying he must have been autopsying we must have been autopsying you must have been autopsying they must have been autopsying
Negation
Simple form
I must not autopsy you must not autopsy he must not autopsy we must not autopsy you must not autopsy they must not autopsy
V-ing form
I must not be autopsying you must not be autopsying he must not be autopsying we must not be autopsying you must not be autopsying they must not be autopsying
Perfect
I must not have autopsied you must not have autopsied he must not have autopsied we must not have autopsied you must not have autopsied they must not have autopsied
V-ing perfect
I must not have been autopsying you must not have been autopsying he must not have been autopsying we must not have been autopsying you must not have been autopsying they must not have been autopsying
Interrogative form
Simple form
must I autopsy? must you autopsy? must he autopsy? must we autopsy? must you autopsy? must they autopsy?
V-ing form
must I be autopsying? must you be autopsying? must he be autopsying? must we be autopsying? must you be autopsying? must they be autopsying?
Perfect
must I have autopsied? must you have autopsied? must he have autopsied? must we have autopsied? must you have autopsied? must they have autopsied?
V-ing perfect
must I have been autopsying? must you have been autopsying? must he have been autopsying? must we have been autopsying? must you have been autopsying? must they have been autopsying?
Interro-negative form
Simple form
must I not autopsy? must you not autopsy? must he not autopsy? must we not autopsy? must you not autopsy? must they not autopsy?
V-ing form
must I not be autopsying? must you not be autopsying? must he not be autopsying? must we not be autopsying? must you not be autopsying? must they not be autopsying?
Perfect
must I not have autopsied? must you not have autopsied? must he not have autopsied? must we not have autopsied? must you not have autopsied? must they not have autopsied?
V-ing perfect
must I not have been autopsying? must you not have been autopsying? must he not have been autopsying? must we not have been autopsying? must you not have been autopsying? must they not have been autopsying?