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 can't count you can't count he can't count we can't count you can't count they can't count
V-ing form
I can't be counting you can't be counting he can't be counting we can't be counting you can't be counting they can't be counting
Perfect
I can't have counted you can't have counted he can't have counted we can't have counted you can't have counted they can't have counted
V-ing perfect
I can't have been counting you can't have been counting he can't have been counting we can't have been counting you can't have been counting they can't 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't I count? can't you count? can't he count? can't we count? can't you count? can't they count?
V-ing form
can't I be counting? can't you be counting? can't he be counting? can't we be counting? can't you be counting? can't they be counting?
Perfect
can't I have counted? can't you have counted? can't he have counted? can't we have counted? can't you have counted? can't they have counted?
V-ing perfect
can't I have been counting? can't you have been counting? can't he have been counting? can't we have been counting? can't you have been counting? can't they have been counting?