I can pocket you can pocket he can pocket we can pocket you can pocket they can pocket
V-ing form
I can be pocketing you can be pocketing he can be pocketing we can be pocketing you can be pocketing they can be pocketing
Perfect
I can have pocketed you can have pocketed he can have pocketed we can have pocketed you can have pocketed they can have pocketed
V-ing perfect
I can have been pocketing you can have been pocketing he can have been pocketing we can have been pocketing you can have been pocketing they can have been pocketing
Negation
Simple form
I cannot pocket you cannot pocket he cannot pocket we cannot pocket you cannot pocket they cannot pocket
V-ing form
I cannot be pocketing you cannot be pocketing he cannot be pocketing we cannot be pocketing you cannot be pocketing they cannot be pocketing
Perfect
I cannot have pocketed you cannot have pocketed he cannot have pocketed we cannot have pocketed you cannot have pocketed they cannot have pocketed
V-ing perfect
I cannot have been pocketing you cannot have been pocketing he cannot have been pocketing we cannot have been pocketing you cannot have been pocketing they cannot have been pocketing
Interrogative form
Simple form
can I pocket? can you pocket? can he pocket? can we pocket? can you pocket? can they pocket?
V-ing form
can I be pocketing? can you be pocketing? can he be pocketing? can we be pocketing? can you be pocketing? can they be pocketing?
Perfect
can I have pocketed? can you have pocketed? can he have pocketed? can we have pocketed? can you have pocketed? can they have pocketed?
V-ing perfect
can I have been pocketing? can you have been pocketing? can he have been pocketing? can we have been pocketing? can you have been pocketing? can they have been pocketing?
Interro-negative form
Simple form
can I not pocket? can you not pocket? can he not pocket? can we not pocket? can you not pocket? can they not pocket?
V-ing form
can I not be pocketing? can you not be pocketing? can he not be pocketing? can we not be pocketing? can you not be pocketing? can they not be pocketing?
Perfect
can I not have pocketed? can you not have pocketed? can he not have pocketed? can we not have pocketed? can you not have pocketed? can they not have pocketed?
V-ing perfect
can I not have been pocketing? can you not have been pocketing? can he not have been pocketing? can we not have been pocketing? can you not have been pocketing? can they not have been pocketing?