I can overlook you can overlook he can overlook we can overlook you can overlook they can overlook
V-ing form
I can be overlooking you can be overlooking he can be overlooking we can be overlooking you can be overlooking they can be overlooking
Perfect
I can have overlooked you can have overlooked he can have overlooked we can have overlooked you can have overlooked they can have overlooked
V-ing perfect
I can have been overlooking you can have been overlooking he can have been overlooking we can have been overlooking you can have been overlooking they can have been overlooking
Negation
Simple form
I cannot overlook you cannot overlook he cannot overlook we cannot overlook you cannot overlook they cannot overlook
V-ing form
I cannot be overlooking you cannot be overlooking he cannot be overlooking we cannot be overlooking you cannot be overlooking they cannot be overlooking
Perfect
I cannot have overlooked you cannot have overlooked he cannot have overlooked we cannot have overlooked you cannot have overlooked they cannot have overlooked
V-ing perfect
I cannot have been overlooking you cannot have been overlooking he cannot have been overlooking we cannot have been overlooking you cannot have been overlooking they cannot have been overlooking
Interrogative form
Simple form
can I overlook? can you overlook? can he overlook? can we overlook? can you overlook? can they overlook?
V-ing form
can I be overlooking? can you be overlooking? can he be overlooking? can we be overlooking? can you be overlooking? can they be overlooking?
Perfect
can I have overlooked? can you have overlooked? can he have overlooked? can we have overlooked? can you have overlooked? can they have overlooked?
V-ing perfect
can I have been overlooking? can you have been overlooking? can he have been overlooking? can we have been overlooking? can you have been overlooking? can they have been overlooking?
Interro-negative form
Simple form
can I not overlook? can you not overlook? can he not overlook? can we not overlook? can you not overlook? can they not overlook?
V-ing form
can I not be overlooking? can you not be overlooking? can he not be overlooking? can we not be overlooking? can you not be overlooking? can they not be overlooking?
Perfect
can I not have overlooked? can you not have overlooked? can he not have overlooked? can we not have overlooked? can you not have overlooked? can they not have overlooked?
V-ing perfect
can I not have been overlooking? can you not have been overlooking? can he not have been overlooking? can we not have been overlooking? can you not have been overlooking? can they not have been overlooking?