I can encumber you can encumber he can encumber we can encumber you can encumber they can encumber
V-ing form
I can be encumbering you can be encumbering he can be encumbering we can be encumbering you can be encumbering they can be encumbering
Perfect
I can have encumbered you can have encumbered he can have encumbered we can have encumbered you can have encumbered they can have encumbered
V-ing perfect
I can have been encumbering you can have been encumbering he can have been encumbering we can have been encumbering you can have been encumbering they can have been encumbering
Negation
Simple form
I cannot encumber you cannot encumber he cannot encumber we cannot encumber you cannot encumber they cannot encumber
V-ing form
I cannot be encumbering you cannot be encumbering he cannot be encumbering we cannot be encumbering you cannot be encumbering they cannot be encumbering
Perfect
I cannot have encumbered you cannot have encumbered he cannot have encumbered we cannot have encumbered you cannot have encumbered they cannot have encumbered
V-ing perfect
I cannot have been encumbering you cannot have been encumbering he cannot have been encumbering we cannot have been encumbering you cannot have been encumbering they cannot have been encumbering
Interrogative form
Simple form
can I encumber? can you encumber? can he encumber? can we encumber? can you encumber? can they encumber?
V-ing form
can I be encumbering? can you be encumbering? can he be encumbering? can we be encumbering? can you be encumbering? can they be encumbering?
Perfect
can I have encumbered? can you have encumbered? can he have encumbered? can we have encumbered? can you have encumbered? can they have encumbered?
V-ing perfect
can I have been encumbering? can you have been encumbering? can he have been encumbering? can we have been encumbering? can you have been encumbering? can they have been encumbering?
Interro-negative form
Simple form
can I not encumber? can you not encumber? can he not encumber? can we not encumber? can you not encumber? can they not encumber?
V-ing form
can I not be encumbering? can you not be encumbering? can he not be encumbering? can we not be encumbering? can you not be encumbering? can they not be encumbering?
Perfect
can I not have encumbered? can you not have encumbered? can he not have encumbered? can we not have encumbered? can you not have encumbered? can they not have encumbered?
V-ing perfect
can I not have been encumbering? can you not have been encumbering? can he not have been encumbering? can we not have been encumbering? can you not have been encumbering? can they not have been encumbering?