I can diaper you can diaper he can diaper we can diaper you can diaper they can diaper
V-ing form
I can be diapering you can be diapering he can be diapering we can be diapering you can be diapering they can be diapering
Perfect
I can have diapered you can have diapered he can have diapered we can have diapered you can have diapered they can have diapered
V-ing perfect
I can have been diapering you can have been diapering he can have been diapering we can have been diapering you can have been diapering they can have been diapering
Negation
Simple form
I cannot diaper you cannot diaper he cannot diaper we cannot diaper you cannot diaper they cannot diaper
V-ing form
I cannot be diapering you cannot be diapering he cannot be diapering we cannot be diapering you cannot be diapering they cannot be diapering
Perfect
I cannot have diapered you cannot have diapered he cannot have diapered we cannot have diapered you cannot have diapered they cannot have diapered
V-ing perfect
I cannot have been diapering you cannot have been diapering he cannot have been diapering we cannot have been diapering you cannot have been diapering they cannot have been diapering
Interrogative form
Simple form
can I diaper? can you diaper? can he diaper? can we diaper? can you diaper? can they diaper?
V-ing form
can I be diapering? can you be diapering? can he be diapering? can we be diapering? can you be diapering? can they be diapering?
Perfect
can I have diapered? can you have diapered? can he have diapered? can we have diapered? can you have diapered? can they have diapered?
V-ing perfect
can I have been diapering? can you have been diapering? can he have been diapering? can we have been diapering? can you have been diapering? can they have been diapering?
Interro-negative form
Simple form
can I not diaper? can you not diaper? can he not diaper? can we not diaper? can you not diaper? can they not diaper?
V-ing form
can I not be diapering? can you not be diapering? can he not be diapering? can we not be diapering? can you not be diapering? can they not be diapering?
Perfect
can I not have diapered? can you not have diapered? can he not have diapered? can we not have diapered? can you not have diapered? can they not have diapered?
V-ing perfect
can I not have been diapering? can you not have been diapering? can he not have been diapering? can we not have been diapering? can you not have been diapering? can they not have been diapering?