I can obey you can obey he can obey we can obey you can obey they can obey
V-ing form
I can be obeying you can be obeying he can be obeying we can be obeying you can be obeying they can be obeying
Perfect
I can have obeyed you can have obeyed he can have obeyed we can have obeyed you can have obeyed they can have obeyed
V-ing perfect
I can have been obeying you can have been obeying he can have been obeying we can have been obeying you can have been obeying they can have been obeying
Negation
Simple form
I can't obey you can't obey he can't obey we can't obey you can't obey they can't obey
V-ing form
I can't be obeying you can't be obeying he can't be obeying we can't be obeying you can't be obeying they can't be obeying
Perfect
I can't have obeyed you can't have obeyed he can't have obeyed we can't have obeyed you can't have obeyed they can't have obeyed
V-ing perfect
I can't have been obeying you can't have been obeying he can't have been obeying we can't have been obeying you can't have been obeying they can't have been obeying
Interrogative form
Simple form
can I obey? can you obey? can he obey? can we obey? can you obey? can they obey?
V-ing form
can I be obeying? can you be obeying? can he be obeying? can we be obeying? can you be obeying? can they be obeying?
Perfect
can I have obeyed? can you have obeyed? can he have obeyed? can we have obeyed? can you have obeyed? can they have obeyed?
V-ing perfect
can I have been obeying? can you have been obeying? can he have been obeying? can we have been obeying? can you have been obeying? can they have been obeying?
Interro-negative form
Simple form
can't I obey? can't you obey? can't he obey? can't we obey? can't you obey? can't they obey?
V-ing form
can't I be obeying? can't you be obeying? can't he be obeying? can't we be obeying? can't you be obeying? can't they be obeying?
Perfect
can't I have obeyed? can't you have obeyed? can't he have obeyed? can't we have obeyed? can't you have obeyed? can't they have obeyed?
V-ing perfect
can't I have been obeying? can't you have been obeying? can't he have been obeying? can't we have been obeying? can't you have been obeying? can't they have been obeying?