I could count you could count she could count we could count you could count they could count
V-ing form
I could be counting you could be counting she could be counting we could be counting you could be counting they could be counting
Perfect
I could have counted you could have counted she could have counted we could have counted you could have counted they could have counted
V-ing perfect
I could have been counting you could have been counting she could have been counting we could have been counting you could have been counting they could have been counting
Negation
Simple form
I couldn't count you couldn't count she couldn't count we couldn't count you couldn't count they couldn't count
V-ing form
I couldn't be counting you couldn't be counting she couldn't be counting we couldn't be counting you couldn't be counting they couldn't be counting
Perfect
I couldn't have counted you couldn't have counted she couldn't have counted we couldn't have counted you couldn't have counted they couldn't have counted
V-ing perfect
I couldn't have been counting you couldn't have been counting she couldn't have been counting we couldn't have been counting you couldn't have been counting they couldn't have been counting
Interrogative form
Simple form
could I count? could you count? could she count? could we count? could you count? could they count?
V-ing form
could I be counting? could you be counting? could she be counting? could we be counting? could you be counting? could they be counting?
Perfect
could I have counted? could you have counted? could she have counted? could we have counted? could you have counted? could they have counted?
V-ing perfect
could I have been counting? could you have been counting? could she have been counting? could we have been counting? could you have been counting? could they have been counting?
Interro-negative form
Simple form
couldn't I count? couldn't you count? couldn't she count? couldn't we count? couldn't you count? couldn't they count?
V-ing form
couldn't I be counting? couldn't you be counting? couldn't she be counting? couldn't we be counting? couldn't you be counting? couldn't they be counting?
Perfect
couldn't I have counted? couldn't you have counted? couldn't she have counted? couldn't we have counted? couldn't you have counted? couldn't they have counted?
V-ing perfect
couldn't I have been counting? couldn't you have been counting? couldn't she have been counting? couldn't we have been counting? couldn't you have been counting? couldn't they have been counting?