I can oversee you can oversee he can oversee we can oversee you can oversee they can oversee
V-ing form
I can be overseeing you can be overseeing he can be overseeing we can be overseeing you can be overseeing they can be overseeing
Perfect
I can have overseen you can have overseen he can have overseen we can have overseen you can have overseen they can have overseen
V-ing perfect
I can have been overseeing you can have been overseeing he can have been overseeing we can have been overseeing you can have been overseeing they can have been overseeing
Negation
Simple form
I cannot oversee you cannot oversee he cannot oversee we cannot oversee you cannot oversee they cannot oversee
V-ing form
I cannot be overseeing you cannot be overseeing he cannot be overseeing we cannot be overseeing you cannot be overseeing they cannot be overseeing
Perfect
I cannot have overseen you cannot have overseen he cannot have overseen we cannot have overseen you cannot have overseen they cannot have overseen
V-ing perfect
I cannot have been overseeing you cannot have been overseeing he cannot have been overseeing we cannot have been overseeing you cannot have been overseeing they cannot have been overseeing
Interrogative form
Simple form
can I oversee? can you oversee? can he oversee? can we oversee? can you oversee? can they oversee?
V-ing form
can I be overseeing? can you be overseeing? can he be overseeing? can we be overseeing? can you be overseeing? can they be overseeing?
Perfect
can I have overseen? can you have overseen? can he have overseen? can we have overseen? can you have overseen? can they have overseen?
V-ing perfect
can I have been overseeing? can you have been overseeing? can he have been overseeing? can we have been overseeing? can you have been overseeing? can they have been overseeing?
Interro-negative form
Simple form
can I not oversee? can you not oversee? can he not oversee? can we not oversee? can you not oversee? can they not oversee?
V-ing form
can I not be overseeing? can you not be overseeing? can he not be overseeing? can we not be overseeing? can you not be overseeing? can they not be overseeing?
Perfect
can I not have overseen? can you not have overseen? can he not have overseen? can we not have overseen? can you not have overseen? can they not have overseen?
V-ing perfect
can I not have been overseeing? can you not have been overseeing? can he not have been overseeing? can we not have been overseeing? can you not have been overseeing? can they not have been overseeing?