I can shiver you can shiver he can shiver we can shiver you can shiver they can shiver
V-ing form
I can be shivering you can be shivering he can be shivering we can be shivering you can be shivering they can be shivering
Perfect
I can have shivered you can have shivered he can have shivered we can have shivered you can have shivered they can have shivered
V-ing perfect
I can have been shivering you can have been shivering he can have been shivering we can have been shivering you can have been shivering they can have been shivering
Negation
Simple form
I can't shiver you can't shiver he can't shiver we can't shiver you can't shiver they can't shiver
V-ing form
I can't be shivering you can't be shivering he can't be shivering we can't be shivering you can't be shivering they can't be shivering
Perfect
I can't have shivered you can't have shivered he can't have shivered we can't have shivered you can't have shivered they can't have shivered
V-ing perfect
I can't have been shivering you can't have been shivering he can't have been shivering we can't have been shivering you can't have been shivering they can't have been shivering
Interrogative form
Simple form
can I shiver? can you shiver? can he shiver? can we shiver? can you shiver? can they shiver?
V-ing form
can I be shivering? can you be shivering? can he be shivering? can we be shivering? can you be shivering? can they be shivering?
Perfect
can I have shivered? can you have shivered? can he have shivered? can we have shivered? can you have shivered? can they have shivered?
V-ing perfect
can I have been shivering? can you have been shivering? can he have been shivering? can we have been shivering? can you have been shivering? can they have been shivering?
Interro-negative form
Simple form
can't I shiver? can't you shiver? can't he shiver? can't we shiver? can't you shiver? can't they shiver?
V-ing form
can't I be shivering? can't you be shivering? can't he be shivering? can't we be shivering? can't you be shivering? can't they be shivering?
Perfect
can't I have shivered? can't you have shivered? can't he have shivered? can't we have shivered? can't you have shivered? can't they have shivered?
V-ing perfect
can't I have been shivering? can't you have been shivering? can't he have been shivering? can't we have been shivering? can't you have been shivering? can't they have been shivering?