I can layer you can layer he can layer we can layer you can layer they can layer
V-ing form
I can be layering you can be layering he can be layering we can be layering you can be layering they can be layering
Perfect
I can have layered you can have layered he can have layered we can have layered you can have layered they can have layered
V-ing perfect
I can have been layering you can have been layering he can have been layering we can have been layering you can have been layering they can have been layering
Negation
Simple form
I can't layer you can't layer he can't layer we can't layer you can't layer they can't layer
V-ing form
I can't be layering you can't be layering he can't be layering we can't be layering you can't be layering they can't be layering
Perfect
I can't have layered you can't have layered he can't have layered we can't have layered you can't have layered they can't have layered
V-ing perfect
I can't have been layering you can't have been layering he can't have been layering we can't have been layering you can't have been layering they can't have been layering
Interrogative form
Simple form
can I layer? can you layer? can he layer? can we layer? can you layer? can they layer?
V-ing form
can I be layering? can you be layering? can he be layering? can we be layering? can you be layering? can they be layering?
Perfect
can I have layered? can you have layered? can he have layered? can we have layered? can you have layered? can they have layered?
V-ing perfect
can I have been layering? can you have been layering? can he have been layering? can we have been layering? can you have been layering? can they have been layering?
Interro-negative form
Simple form
can't I layer? can't you layer? can't he layer? can't we layer? can't you layer? can't they layer?
V-ing form
can't I be layering? can't you be layering? can't he be layering? can't we be layering? can't you be layering? can't they be layering?
Perfect
can't I have layered? can't you have layered? can't he have layered? can't we have layered? can't you have layered? can't they have layered?
V-ing perfect
can't I have been layering? can't you have been layering? can't he have been layering? can't we have been layering? can't you have been layering? can't they have been layering?