English verb conjugation
COULD OVERWORK

Regular verb: overwork - overworked - overworked

Affirmation

Simple form	V-ing form
I could overwork you could overwork he could overwork we could overwork you could overwork they could overwork	I could be overworking you could be overworking he could be overworking we could be overworking you could be overworking they could be overworking
Perfect	V-ing perfect
I could have overworked you could have overworked he could have overworked we could have overworked you could have overworked they could have overworked	I could have been overworking you could have been overworking he could have been overworking we could have been overworking you could have been overworking they could have been overworking

Negation

Simple form	V-ing form
I could not overwork you could not overwork he could not overwork we could not overwork you could not overwork they could not overwork	I could not be overworking you could not be overworking he could not be overworking we could not be overworking you could not be overworking they could not be overworking
Perfect	V-ing perfect
I could not have overworked you could not have overworked he could not have overworked we could not have overworked you could not have overworked they could not have overworked	I could not have been overworking you could not have been overworking he could not have been overworking we could not have been overworking you could not have been overworking they could not have been overworking

Interrogative form

Simple form	V-ing form
could I overwork? could you overwork? could he overwork? could we overwork? could you overwork? could they overwork?	could I be overworking? could you be overworking? could he be overworking? could we be overworking? could you be overworking? could they be overworking?
Perfect	V-ing perfect
could I have overworked? could you have overworked? could he have overworked? could we have overworked? could you have overworked? could they have overworked?	could I have been overworking? could you have been overworking? could he have been overworking? could we have been overworking? could you have been overworking? could they have been overworking?

Interro-negative form

Simple form	V-ing form
could I not overwork? could you not overwork? could he not overwork? could we not overwork? could you not overwork? could they not overwork?	could I not be overworking? could you not be overworking? could he not be overworking? could we not be overworking? could you not be overworking? could they not be overworking?
Perfect	V-ing perfect
could I not have overworked? could you not have overworked? could he not have overworked? could we not have overworked? could you not have overworked? could they not have overworked?	could I not have been overworking? could you not have been overworking? could he not have been overworking? could we not have been overworking? could you not have been overworking? could they not have been overworking?