I can count you can count he can count we can count you can count they can count
V-ing form
I can be counting you can be counting he can be counting we can be counting you can be counting they can be counting
Perfect
I can have counted you can have counted he can have counted we can have counted you can have counted they can have counted
V-ing perfect
I can have been counting you can have been counting he can have been counting we can have been counting you can have been counting they can have been counting
Negation
Simple form
I cannot count you cannot count he cannot count we cannot count you cannot count they cannot count
V-ing form
I cannot be counting you cannot be counting he cannot be counting we cannot be counting you cannot be counting they cannot be counting
Perfect
I cannot have counted you cannot have counted he cannot have counted we cannot have counted you cannot have counted they cannot have counted
V-ing perfect
I cannot have been counting you cannot have been counting he cannot have been counting we cannot have been counting you cannot have been counting they cannot have been counting
Interrogative form
Simple form
can I count? can you count? can he count? can we count? can you count? can they count?
V-ing form
can I be counting? can you be counting? can he be counting? can we be counting? can you be counting? can they be counting?
Perfect
can I have counted? can you have counted? can he have counted? can we have counted? can you have counted? can they have counted?
V-ing perfect
can I have been counting? can you have been counting? can he have been counting? can we have been counting? can you have been counting? can they have been counting?
Interro-negative form
Simple form
can I not count? can you not count? can he not count? can we not count? can you not count? can they not count?
V-ing form
can I not be counting? can you not be counting? can he not be counting? can we not be counting? can you not be counting? can they not be counting?
Perfect
can I not have counted? can you not have counted? can he not have counted? can we not have counted? can you not have counted? can they not have counted?
V-ing perfect
can I not have been counting? can you not have been counting? can he not have been counting? can we not have been counting? can you not have been counting? can they not have been counting?