I can hail you can hail he can hail we can hail you can hail they can hail
V-ing form
I can be hailing you can be hailing he can be hailing we can be hailing you can be hailing they can be hailing
Perfect
I can have hailed you can have hailed he can have hailed we can have hailed you can have hailed they can have hailed
V-ing perfect
I can have been hailing you can have been hailing he can have been hailing we can have been hailing you can have been hailing they can have been hailing
Negation
Simple form
I can't hail you can't hail he can't hail we can't hail you can't hail they can't hail
V-ing form
I can't be hailing you can't be hailing he can't be hailing we can't be hailing you can't be hailing they can't be hailing
Perfect
I can't have hailed you can't have hailed he can't have hailed we can't have hailed you can't have hailed they can't have hailed
V-ing perfect
I can't have been hailing you can't have been hailing he can't have been hailing we can't have been hailing you can't have been hailing they can't have been hailing
Interrogative form
Simple form
can I hail? can you hail? can he hail? can we hail? can you hail? can they hail?
V-ing form
can I be hailing? can you be hailing? can he be hailing? can we be hailing? can you be hailing? can they be hailing?
Perfect
can I have hailed? can you have hailed? can he have hailed? can we have hailed? can you have hailed? can they have hailed?
V-ing perfect
can I have been hailing? can you have been hailing? can he have been hailing? can we have been hailing? can you have been hailing? can they have been hailing?
Interro-negative form
Simple form
can't I hail? can't you hail? can't he hail? can't we hail? can't you hail? can't they hail?
V-ing form
can't I be hailing? can't you be hailing? can't he be hailing? can't we be hailing? can't you be hailing? can't they be hailing?
Perfect
can't I have hailed? can't you have hailed? can't he have hailed? can't we have hailed? can't you have hailed? can't they have hailed?
V-ing perfect
can't I have been hailing? can't you have been hailing? can't he have been hailing? can't we have been hailing? can't you have been hailing? can't they have been hailing?