I can feel you can feel he can feel we can feel you can feel they can feel
V-ing form
I can be feeling you can be feeling he can be feeling we can be feeling you can be feeling they can be feeling
Perfect
I can have felt you can have felt he can have felt we can have felt you can have felt they can have felt
V-ing perfect
I can have been feeling you can have been feeling he can have been feeling we can have been feeling you can have been feeling they can have been feeling
Negation
Simple form
I can't feel you can't feel he can't feel we can't feel you can't feel they can't feel
V-ing form
I can't be feeling you can't be feeling he can't be feeling we can't be feeling you can't be feeling they can't be feeling
Perfect
I can't have felt you can't have felt he can't have felt we can't have felt you can't have felt they can't have felt
V-ing perfect
I can't have been feeling you can't have been feeling he can't have been feeling we can't have been feeling you can't have been feeling they can't have been feeling
Interrogative form
Simple form
can I feel? can you feel? can he feel? can we feel? can you feel? can they feel?
V-ing form
can I be feeling? can you be feeling? can he be feeling? can we be feeling? can you be feeling? can they be feeling?
Perfect
can I have felt? can you have felt? can he have felt? can we have felt? can you have felt? can they have felt?
V-ing perfect
can I have been feeling? can you have been feeling? can he have been feeling? can we have been feeling? can you have been feeling? can they have been feeling?
Interro-negative form
Simple form
can't I feel? can't you feel? can't he feel? can't we feel? can't you feel? can't they feel?
V-ing form
can't I be feeling? can't you be feeling? can't he be feeling? can't we be feeling? can't you be feeling? can't they be feeling?
Perfect
can't I have felt? can't you have felt? can't he have felt? can't we have felt? can't you have felt? can't they have felt?
V-ing perfect
can't I have been feeling? can't you have been feeling? can't he have been feeling? can't we have been feeling? can't you have been feeling? can't they have been feeling?