I could dribble you could dribble she could dribble we could dribble you could dribble they could dribble
V-ing form
I could be dribbling you could be dribbling she could be dribbling we could be dribbling you could be dribbling they could be dribbling
Perfect
I could have dribbled you could have dribbled she could have dribbled we could have dribbled you could have dribbled they could have dribbled
V-ing perfect
I could have been dribbling you could have been dribbling she could have been dribbling we could have been dribbling you could have been dribbling they could have been dribbling
Negation
Simple form
I could not dribble you could not dribble she could not dribble we could not dribble you could not dribble they could not dribble
V-ing form
I could not be dribbling you could not be dribbling she could not be dribbling we could not be dribbling you could not be dribbling they could not be dribbling
Perfect
I could not have dribbled you could not have dribbled she could not have dribbled we could not have dribbled you could not have dribbled they could not have dribbled
V-ing perfect
I could not have been dribbling you could not have been dribbling she could not have been dribbling we could not have been dribbling you could not have been dribbling they could not have been dribbling
Interrogative form
Simple form
could I dribble? could you dribble? could she dribble? could we dribble? could you dribble? could they dribble?
V-ing form
could I be dribbling? could you be dribbling? could she be dribbling? could we be dribbling? could you be dribbling? could they be dribbling?
Perfect
could I have dribbled? could you have dribbled? could she have dribbled? could we have dribbled? could you have dribbled? could they have dribbled?
V-ing perfect
could I have been dribbling? could you have been dribbling? could she have been dribbling? could we have been dribbling? could you have been dribbling? could they have been dribbling?
Interro-negative form
Simple form
could I not dribble? could you not dribble? could she not dribble? could we not dribble? could you not dribble? could they not dribble?
V-ing form
could I not be dribbling? could you not be dribbling? could she not be dribbling? could we not be dribbling? could you not be dribbling? could they not be dribbling?
Perfect
could I not have dribbled? could you not have dribbled? could she not have dribbled? could we not have dribbled? could you not have dribbled? could they not have dribbled?
V-ing perfect
could I not have been dribbling? could you not have been dribbling? could she not have been dribbling? could we not have been dribbling? could you not have been dribbling? could they not have been dribbling?