English verb conjugation
COULD PREREGISTER

Regular verb: preregister - preregistered - preregistered

Affirmation

Simple form	V-ing form
I could preregister you could preregister he could preregister we could preregister you could preregister they could preregister	I could be preregistering you could be preregistering he could be preregistering we could be preregistering you could be preregistering they could be preregistering
Perfect	V-ing perfect
I could have preregistered you could have preregistered he could have preregistered we could have preregistered you could have preregistered they could have preregistered	I could have been preregistering you could have been preregistering he could have been preregistering we could have been preregistering you could have been preregistering they could have been preregistering

Negation

Simple form	V-ing form
I could not preregister you could not preregister he could not preregister we could not preregister you could not preregister they could not preregister	I could not be preregistering you could not be preregistering he could not be preregistering we could not be preregistering you could not be preregistering they could not be preregistering
Perfect	V-ing perfect
I could not have preregistered you could not have preregistered he could not have preregistered we could not have preregistered you could not have preregistered they could not have preregistered	I could not have been preregistering you could not have been preregistering he could not have been preregistering we could not have been preregistering you could not have been preregistering they could not have been preregistering

Interrogative form

Simple form	V-ing form
could I preregister? could you preregister? could he preregister? could we preregister? could you preregister? could they preregister?	could I be preregistering? could you be preregistering? could he be preregistering? could we be preregistering? could you be preregistering? could they be preregistering?
Perfect	V-ing perfect
could I have preregistered? could you have preregistered? could he have preregistered? could we have preregistered? could you have preregistered? could they have preregistered?	could I have been preregistering? could you have been preregistering? could he have been preregistering? could we have been preregistering? could you have been preregistering? could they have been preregistering?

Interro-negative form

Simple form	V-ing form
could I not preregister? could you not preregister? could he not preregister? could we not preregister? could you not preregister? could they not preregister?	could I not be preregistering? could you not be preregistering? could he not be preregistering? could we not be preregistering? could you not be preregistering? could they not be preregistering?
Perfect	V-ing perfect
could I not have preregistered? could you not have preregistered? could he not have preregistered? could we not have preregistered? could you not have preregistered? could they not have preregistered?	could I not have been preregistering? could you not have been preregistering? could he not have been preregistering? could we not have been preregistering? could you not have been preregistering? could they not have been preregistering?