English verb conjugation
COULD DIAPER

Regular verb: diaper - diapered - diapered

Affirmation

Simple form	V-ing form
I could diaper you could diaper he could diaper we could diaper you could diaper they could diaper	I could be diapering you could be diapering he could be diapering we could be diapering you could be diapering they could be diapering
Perfect	V-ing perfect
I could have diapered you could have diapered he could have diapered we could have diapered you could have diapered they could have diapered	I could have been diapering you could have been diapering he could have been diapering we could have been diapering you could have been diapering they could have been diapering

Negation

Simple form	V-ing form
I could not diaper you could not diaper he could not diaper we could not diaper you could not diaper they could not diaper	I could not be diapering you could not be diapering he could not be diapering we could not be diapering you could not be diapering they could not be diapering
Perfect	V-ing perfect
I could not have diapered you could not have diapered he could not have diapered we could not have diapered you could not have diapered they could not have diapered	I could not have been diapering you could not have been diapering he could not have been diapering we could not have been diapering you could not have been diapering they could not have been diapering

Interrogative form

Simple form	V-ing form
could I diaper? could you diaper? could he diaper? could we diaper? could you diaper? could they diaper?	could I be diapering? could you be diapering? could he be diapering? could we be diapering? could you be diapering? could they be diapering?
Perfect	V-ing perfect
could I have diapered? could you have diapered? could he have diapered? could we have diapered? could you have diapered? could they have diapered?	could I have been diapering? could you have been diapering? could he have been diapering? could we have been diapering? could you have been diapering? could they have been diapering?

Interro-negative form

Simple form	V-ing form
could I not diaper? could you not diaper? could he not diaper? could we not diaper? could you not diaper? could they not diaper?	could I not be diapering? could you not be diapering? could he not be diapering? could we not be diapering? could you not be diapering? could they not be diapering?
Perfect	V-ing perfect
could I not have diapered? could you not have diapered? could he not have diapered? could we not have diapered? could you not have diapered? could they not have diapered?	could I not have been diapering? could you not have been diapering? could he not have been diapering? could we not have been diapering? could you not have been diapering? could they not have been diapering?