I could obey you could obey she could obey we could obey you could obey they could obey
V-ing form
I could be obeying you could be obeying she could be obeying we could be obeying you could be obeying they could be obeying
Perfect
I could have obeyed you could have obeyed she could have obeyed we could have obeyed you could have obeyed they could have obeyed
V-ing perfect
I could have been obeying you could have been obeying she could have been obeying we could have been obeying you could have been obeying they could have been obeying
Negation
Simple form
I could not obey you could not obey she could not obey we could not obey you could not obey they could not obey
V-ing form
I could not be obeying you could not be obeying she could not be obeying we could not be obeying you could not be obeying they could not be obeying
Perfect
I could not have obeyed you could not have obeyed she could not have obeyed we could not have obeyed you could not have obeyed they could not have obeyed
V-ing perfect
I could not have been obeying you could not have been obeying she could not have been obeying we could not have been obeying you could not have been obeying they could not have been obeying
Interrogative form
Simple form
could I obey? could you obey? could she obey? could we obey? could you obey? could they obey?
V-ing form
could I be obeying? could you be obeying? could she be obeying? could we be obeying? could you be obeying? could they be obeying?
Perfect
could I have obeyed? could you have obeyed? could she have obeyed? could we have obeyed? could you have obeyed? could they have obeyed?
V-ing perfect
could I have been obeying? could you have been obeying? could she have been obeying? could we have been obeying? could you have been obeying? could they have been obeying?
Interro-negative form
Simple form
could I not obey? could you not obey? could she not obey? could we not obey? could you not obey? could they not obey?
V-ing form
could I not be obeying? could you not be obeying? could she not be obeying? could we not be obeying? could you not be obeying? could they not be obeying?
Perfect
could I not have obeyed? could you not have obeyed? could she not have obeyed? could we not have obeyed? could you not have obeyed? could they not have obeyed?
V-ing perfect
could I not have been obeying? could you not have been obeying? could she not have been obeying? could we not have been obeying? could you not have been obeying? could they not have been obeying?