I could hold you could hold he could hold we could hold you could hold they could hold
V-ing form
I could be holding you could be holding he could be holding we could be holding you could be holding they could be holding
Perfect
I could have held you could have held he could have held we could have held you could have held they could have held
V-ing perfect
I could have been holding you could have been holding he could have been holding we could have been holding you could have been holding they could have been holding
Negation
Simple form
I could not hold you could not hold he could not hold we could not hold you could not hold they could not hold
V-ing form
I could not be holding you could not be holding he could not be holding we could not be holding you could not be holding they could not be holding
Perfect
I could not have held you could not have held he could not have held we could not have held you could not have held they could not have held
V-ing perfect
I could not have been holding you could not have been holding he could not have been holding we could not have been holding you could not have been holding they could not have been holding
Interrogative form
Simple form
could I hold? could you hold? could he hold? could we hold? could you hold? could they hold?
V-ing form
could I be holding? could you be holding? could he be holding? could we be holding? could you be holding? could they be holding?
Perfect
could I have held? could you have held? could he have held? could we have held? could you have held? could they have held?
V-ing perfect
could I have been holding? could you have been holding? could he have been holding? could we have been holding? could you have been holding? could they have been holding?
Interro-negative form
Simple form
could I not hold? could you not hold? could he not hold? could we not hold? could you not hold? could they not hold?
V-ing form
could I not be holding? could you not be holding? could he not be holding? could we not be holding? could you not be holding? could they not be holding?
Perfect
could I not have held? could you not have held? could he not have held? could we not have held? could you not have held? could they not have held?
V-ing perfect
could I not have been holding? could you not have been holding? could he not have been holding? could we not have been holding? could you not have been holding? could they not have been holding?