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 can't oversee you can't oversee he can't oversee we can't oversee you can't oversee they can't oversee
V-ing form
I can't be overseeing you can't be overseeing he can't be overseeing we can't be overseeing you can't be overseeing they can't be overseeing
Perfect
I can't have overseen you can't have overseen he can't have overseen we can't have overseen you can't have overseen they can't have overseen
V-ing perfect
I can't have been overseeing you can't have been overseeing he can't have been overseeing we can't have been overseeing you can't have been overseeing they can't 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't I oversee? can't you oversee? can't he oversee? can't we oversee? can't you oversee? can't they oversee?
V-ing form
can't I be overseeing? can't you be overseeing? can't he be overseeing? can't we be overseeing? can't you be overseeing? can't they be overseeing?
Perfect
can't I have overseen? can't you have overseen? can't he have overseen? can't we have overseen? can't you have overseen? can't they have overseen?
V-ing perfect
can't I have been overseeing? can't you have been overseeing? can't he have been overseeing? can't we have been overseeing? can't you have been overseeing? can't they have been overseeing?