English verb conjugation
CAN COUNT

Regular verb: count - counted - counted

Affirmation

Simple form	V-ing form
I can count you can count she can count we can count you can count they can count	I can be counting you can be counting she can be counting we can be counting you can be counting they can be counting
Perfect	V-ing perfect
I can have counted you can have counted she can have counted we can have counted you can have counted they can have counted	I can have been counting you can have been counting she can have been counting we can have been counting you can have been counting they can have been counting

Negation

Simple form	V-ing form
I cannot count you cannot count she cannot count we cannot count you cannot count they cannot count	I cannot be counting you cannot be counting she cannot be counting we cannot be counting you cannot be counting they cannot be counting
Perfect	V-ing perfect
I cannot have counted you cannot have counted she cannot have counted we cannot have counted you cannot have counted they cannot have counted	I cannot have been counting you cannot have been counting she cannot have been counting we cannot have been counting you cannot have been counting they cannot have been counting

Interrogative form

Simple form	V-ing form
can I count? can you count? can she count? can we count? can you count? can they count?	can I be counting? can you be counting? can she be counting? can we be counting? can you be counting? can they be counting?
Perfect	V-ing perfect
can I have counted? can you have counted? can she have counted? can we have counted? can you have counted? can they have counted?	can I have been counting? can you have been counting? can she have been counting? can we have been counting? can you have been counting? can they have been counting?

Interro-negative form

Simple form	V-ing form
can I not count? can you not count? can she not count? can we not count? can you not count? can they not count?	can I not be counting? can you not be counting? can she not be counting? can we not be counting? can you not be counting? can they not be counting?
Perfect	V-ing perfect
can I not have counted? can you not have counted? can she not have counted? can we not have counted? can you not have counted? can they not have counted?	can I not have been counting? can you not have been counting? can she not have been counting? can we not have been counting? can you not have been counting? can they not have been counting?