I could feel you could feel she could feel we could feel you could feel they could feel
V-ing form
I could be feeling you could be feeling she could be feeling we could be feeling you could be feeling they could be feeling
Perfect
I could have felt you could have felt she could have felt we could have felt you could have felt they could have felt
V-ing perfect
I could have been feeling you could have been feeling she could have been feeling we could have been feeling you could have been feeling they could have been feeling
Negation
Simple form
I could not feel you could not feel she could not feel we could not feel you could not feel they could not feel
V-ing form
I could not be feeling you could not be feeling she could not be feeling we could not be feeling you could not be feeling they could not be feeling
Perfect
I could not have felt you could not have felt she could not have felt we could not have felt you could not have felt they could not have felt
V-ing perfect
I could not have been feeling you could not have been feeling she could not have been feeling we could not have been feeling you could not have been feeling they could not have been feeling
Interrogative form
Simple form
could I feel? could you feel? could she feel? could we feel? could you feel? could they feel?
V-ing form
could I be feeling? could you be feeling? could she be feeling? could we be feeling? could you be feeling? could they be feeling?
Perfect
could I have felt? could you have felt? could she have felt? could we have felt? could you have felt? could they have felt?
V-ing perfect
could I have been feeling? could you have been feeling? could she have been feeling? could we have been feeling? could you have been feeling? could they have been feeling?
Interro-negative form
Simple form
could I not feel? could you not feel? could she not feel? could we not feel? could you not feel? could they not feel?
V-ing form
could I not be feeling? could you not be feeling? could she not be feeling? could we not be feeling? could you not be feeling? could they not be feeling?
Perfect
could I not have felt? could you not have felt? could she not have felt? could we not have felt? could you not have felt? could they not have felt?
V-ing perfect
could I not have been feeling? could you not have been feeling? could she not have been feeling? could we not have been feeling? could you not have been feeling? could they not have been feeling?