I can layer you can layer she can layer we can layer you can layer they can layer
V-ing form
I can be layering you can be layering she can be layering we can be layering you can be layering they can be layering
Perfect
I can have layered you can have layered she 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 she can have been layering we can have been layering you can have been layering they can have been layering
Negation
Simple form
I cannot layer you cannot layer she cannot layer we cannot layer you cannot layer they cannot layer
V-ing form
I cannot be layering you cannot be layering she cannot be layering we cannot be layering you cannot be layering they cannot be layering
Perfect
I cannot have layered you cannot have layered she cannot have layered we cannot have layered you cannot have layered they cannot have layered
V-ing perfect
I cannot have been layering you cannot have been layering she cannot have been layering we cannot have been layering you cannot have been layering they cannot have been layering
Interrogative form
Simple form
can I layer? can you layer? can she layer? can we layer? can you layer? can they layer?
V-ing form
can I be layering? can you be layering? can she be layering? can we be layering? can you be layering? can they be layering?
Perfect
can I have layered? can you have layered? can she 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 she have been layering? can we have been layering? can you have been layering? can they have been layering?
Interro-negative form
Simple form
can I not layer? can you not layer? can she not layer? can we not layer? can you not layer? can they not layer?
V-ing form
can I not be layering? can you not be layering? can she not be layering? can we not be layering? can you not be layering? can they not be layering?
Perfect
can I not have layered? can you not have layered? can she not have layered? can we not have layered? can you not have layered? can they not have layered?
V-ing perfect
can I not have been layering? can you not have been layering? can she not have been layering? can we not have been layering? can you not have been layering? can they not have been layering?