I can don you can don he can don we can don you can don they can don
V-ing form
I can be donning you can be donning he can be donning we can be donning you can be donning they can be donning
Perfect
I can have donned you can have donned he can have donned we can have donned you can have donned they can have donned
V-ing perfect
I can have been donning you can have been donning he can have been donning we can have been donning you can have been donning they can have been donning
Negation
Simple form
I cannot don you cannot don he cannot don we cannot don you cannot don they cannot don
V-ing form
I cannot be donning you cannot be donning he cannot be donning we cannot be donning you cannot be donning they cannot be donning
Perfect
I cannot have donned you cannot have donned he cannot have donned we cannot have donned you cannot have donned they cannot have donned
V-ing perfect
I cannot have been donning you cannot have been donning he cannot have been donning we cannot have been donning you cannot have been donning they cannot have been donning
Interrogative form
Simple form
can I don? can you don? can he don? can we don? can you don? can they don?
V-ing form
can I be donning? can you be donning? can he be donning? can we be donning? can you be donning? can they be donning?
Perfect
can I have donned? can you have donned? can he have donned? can we have donned? can you have donned? can they have donned?
V-ing perfect
can I have been donning? can you have been donning? can he have been donning? can we have been donning? can you have been donning? can they have been donning?
Interro-negative form
Simple form
can I not don? can you not don? can he not don? can we not don? can you not don? can they not don?
V-ing form
can I not be donning? can you not be donning? can he not be donning? can we not be donning? can you not be donning? can they not be donning?
Perfect
can I not have donned? can you not have donned? can he not have donned? can we not have donned? can you not have donned? can they not have donned?
V-ing perfect
can I not have been donning? can you not have been donning? can he not have been donning? can we not have been donning? can you not have been donning? can they not have been donning?