English verb conjugation
COULD OVERWORK

Regular verb: overwork - overworked - overworked

Affirmation

Simple form	V-ing form
I could overwork you could overwork she could overwork we could overwork you could overwork they could overwork	I could be overworking you could be overworking she 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 she 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 she 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 she 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 she 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 she 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 she 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 she overwork? could we overwork? could you overwork? could they overwork?	could I be overworking? could you be overworking? could she 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 she 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 she 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 she 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 she 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 she 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 she not have been overworking? could we not have been overworking? could you not have been overworking? could they not have been overworking?