I can pocket you can pocket she can pocket we can pocket you can pocket they can pocket
V-ing form
I can be pocketing you can be pocketing she can be pocketing we can be pocketing you can be pocketing they can be pocketing
Perfect
I can have pocketed you can have pocketed she 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 she 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 she cannot pocket we cannot pocket you cannot pocket they cannot pocket
V-ing form
I cannot be pocketing you cannot be pocketing she cannot be pocketing we cannot be pocketing you cannot be pocketing they cannot be pocketing
Perfect
I cannot have pocketed you cannot have pocketed she 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 she 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 she pocket? can we pocket? can you pocket? can they pocket?
V-ing form
can I be pocketing? can you be pocketing? can she be pocketing? can we be pocketing? can you be pocketing? can they be pocketing?
Perfect
can I have pocketed? can you have pocketed? can she 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 she 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 she 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 she 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 she 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 she not have been pocketing? can we not have been pocketing? can you not have been pocketing? can they not have been pocketing?