I could position you could position he could position we could position you could position they could position
V-ing form
I could be positioning you could be positioning he could be positioning we could be positioning you could be positioning they could be positioning
Perfect
I could have positioned you could have positioned he could have positioned we could have positioned you could have positioned they could have positioned
V-ing perfect
I could have been positioning you could have been positioning he could have been positioning we could have been positioning you could have been positioning they could have been positioning
Negation
Simple form
I couldn't position you couldn't position he couldn't position we couldn't position you couldn't position they couldn't position
V-ing form
I couldn't be positioning you couldn't be positioning he couldn't be positioning we couldn't be positioning you couldn't be positioning they couldn't be positioning
Perfect
I couldn't have positioned you couldn't have positioned he couldn't have positioned we couldn't have positioned you couldn't have positioned they couldn't have positioned
V-ing perfect
I couldn't have been positioning you couldn't have been positioning he couldn't have been positioning we couldn't have been positioning you couldn't have been positioning they couldn't have been positioning
Interrogative form
Simple form
could I position? could you position? could he position? could we position? could you position? could they position?
V-ing form
could I be positioning? could you be positioning? could he be positioning? could we be positioning? could you be positioning? could they be positioning?
Perfect
could I have positioned? could you have positioned? could he have positioned? could we have positioned? could you have positioned? could they have positioned?
V-ing perfect
could I have been positioning? could you have been positioning? could he have been positioning? could we have been positioning? could you have been positioning? could they have been positioning?
Interro-negative form
Simple form
couldn't I position? couldn't you position? couldn't he position? couldn't we position? couldn't you position? couldn't they position?
V-ing form
couldn't I be positioning? couldn't you be positioning? couldn't he be positioning? couldn't we be positioning? couldn't you be positioning? couldn't they be positioning?
Perfect
couldn't I have positioned? couldn't you have positioned? couldn't he have positioned? couldn't we have positioned? couldn't you have positioned? couldn't they have positioned?
V-ing perfect
couldn't I have been positioning? couldn't you have been positioning? couldn't he have been positioning? couldn't we have been positioning? couldn't you have been positioning? couldn't they have been positioning?