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 couldn't feel you couldn't feel she couldn't feel we couldn't feel you couldn't feel they couldn't feel
V-ing form
I couldn't be feeling you couldn't be feeling she couldn't be feeling we couldn't be feeling you couldn't be feeling they couldn't be feeling
Perfect
I couldn't have felt you couldn't have felt she couldn't have felt we couldn't have felt you couldn't have felt they couldn't have felt
V-ing perfect
I couldn't have been feeling you couldn't have been feeling she couldn't have been feeling we couldn't have been feeling you couldn't have been feeling they couldn't 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
couldn't I feel? couldn't you feel? couldn't she feel? couldn't we feel? couldn't you feel? couldn't they feel?
V-ing form
couldn't I be feeling? couldn't you be feeling? couldn't she be feeling? couldn't we be feeling? couldn't you be feeling? couldn't they be feeling?
Perfect
couldn't I have felt? couldn't you have felt? couldn't she have felt? couldn't we have felt? couldn't you have felt? couldn't they have felt?
V-ing perfect
couldn't I have been feeling? couldn't you have been feeling? couldn't she have been feeling? couldn't we have been feeling? couldn't you have been feeling? couldn't they have been feeling?