English verb conjugation
COULD PRENUMBER

Regular verb: prenumber - prenumbered - prenumbered

Affirmation

Simple form	V-ing form
I could prenumber you could prenumber he could prenumber we could prenumber you could prenumber they could prenumber	I could be prenumbering you could be prenumbering he could be prenumbering we could be prenumbering you could be prenumbering they could be prenumbering
Perfect	V-ing perfect
I could have prenumbered you could have prenumbered he could have prenumbered we could have prenumbered you could have prenumbered they could have prenumbered	I could have been prenumbering you could have been prenumbering he could have been prenumbering we could have been prenumbering you could have been prenumbering they could have been prenumbering

Negation

Simple form	V-ing form
I couldn't prenumber you couldn't prenumber he couldn't prenumber we couldn't prenumber you couldn't prenumber they couldn't prenumber	I couldn't be prenumbering you couldn't be prenumbering he couldn't be prenumbering we couldn't be prenumbering you couldn't be prenumbering they couldn't be prenumbering
Perfect	V-ing perfect
I couldn't have prenumbered you couldn't have prenumbered he couldn't have prenumbered we couldn't have prenumbered you couldn't have prenumbered they couldn't have prenumbered	I couldn't have been prenumbering you couldn't have been prenumbering he couldn't have been prenumbering we couldn't have been prenumbering you couldn't have been prenumbering they couldn't have been prenumbering

Interrogative form

Simple form	V-ing form
could I prenumber? could you prenumber? could he prenumber? could we prenumber? could you prenumber? could they prenumber?	could I be prenumbering? could you be prenumbering? could he be prenumbering? could we be prenumbering? could you be prenumbering? could they be prenumbering?
Perfect	V-ing perfect
could I have prenumbered? could you have prenumbered? could he have prenumbered? could we have prenumbered? could you have prenumbered? could they have prenumbered?	could I have been prenumbering? could you have been prenumbering? could he have been prenumbering? could we have been prenumbering? could you have been prenumbering? could they have been prenumbering?

Interro-negative form

Simple form	V-ing form
couldn't I prenumber? couldn't you prenumber? couldn't he prenumber? couldn't we prenumber? couldn't you prenumber? couldn't they prenumber?	couldn't I be prenumbering? couldn't you be prenumbering? couldn't he be prenumbering? couldn't we be prenumbering? couldn't you be prenumbering? couldn't they be prenumbering?
Perfect	V-ing perfect
couldn't I have prenumbered? couldn't you have prenumbered? couldn't he have prenumbered? couldn't we have prenumbered? couldn't you have prenumbered? couldn't they have prenumbered?	couldn't I have been prenumbering? couldn't you have been prenumbering? couldn't he have been prenumbering? couldn't we have been prenumbering? couldn't you have been prenumbering? couldn't they have been prenumbering?