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 couldn't diaper you couldn't diaper he couldn't diaper we couldn't diaper you couldn't diaper they couldn't diaper	I couldn't be diapering you couldn't be diapering he couldn't be diapering we couldn't be diapering you couldn't be diapering they couldn't be diapering
Perfect	V-ing perfect
I couldn't have diapered you couldn't have diapered he couldn't have diapered we couldn't have diapered you couldn't have diapered they couldn't have diapered	I couldn't have been diapering you couldn't have been diapering he couldn't have been diapering we couldn't have been diapering you couldn't have been diapering they couldn't 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
couldn't I diaper? couldn't you diaper? couldn't he diaper? couldn't we diaper? couldn't you diaper? couldn't they diaper?	couldn't I be diapering? couldn't you be diapering? couldn't he be diapering? couldn't we be diapering? couldn't you be diapering? couldn't they be diapering?
Perfect	V-ing perfect
couldn't I have diapered? couldn't you have diapered? couldn't he have diapered? couldn't we have diapered? couldn't you have diapered? couldn't they have diapered?	couldn't I have been diapering? couldn't you have been diapering? couldn't he have been diapering? couldn't we have been diapering? couldn't you have been diapering? couldn't they have been diapering?