English verb conjugation
COULD WORK

Regular verb: work - worked - worked

Affirmation

Simple form	V-ing form
I could work you could work he could work we could work you could work they could work	I could be working you could be working he could be working we could be working you could be working they could be working
Perfect	V-ing perfect
I could have worked you could have worked he could have worked we could have worked you could have worked they could have worked	I could have been working you could have been working he could have been working we could have been working you could have been working they could have been working

Negation

Simple form	V-ing form
I could not work you could not work he could not work we could not work you could not work they could not work	I could not be working you could not be working he could not be working we could not be working you could not be working they could not be working
Perfect	V-ing perfect
I could not have worked you could not have worked he could not have worked we could not have worked you could not have worked they could not have worked	I could not have been working you could not have been working he could not have been working we could not have been working you could not have been working they could not have been working

Interrogative form

Simple form	V-ing form
could I work? could you work? could he work? could we work? could you work? could they work?	could I be working? could you be working? could he be working? could we be working? could you be working? could they be working?
Perfect	V-ing perfect
could I have worked? could you have worked? could he have worked? could we have worked? could you have worked? could they have worked?	could I have been working? could you have been working? could he have been working? could we have been working? could you have been working? could they have been working?

Interro-negative form

Simple form	V-ing form
could I not work? could you not work? could he not work? could we not work? could you not work? could they not work?	could I not be working? could you not be working? could he not be working? could we not be working? could you not be working? could they not be working?
Perfect	V-ing perfect
could I not have worked? could you not have worked? could he not have worked? could we not have worked? could you not have worked? could they not have worked?	could I not have been working? could you not have been working? could he not have been working? could we not have been working? could you not have been working? could they not have been working?