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