English verb conjugation
COULD REWORK

Regular verb: rework - reworked - reworked

Affirmation

Simple form	V-ing form
I could rework you could rework he could rework we could rework you could rework they could rework	I could be reworking you could be reworking he could be reworking we could be reworking you could be reworking they could be reworking
Perfect	V-ing perfect
I could have reworked you could have reworked he could have reworked we could have reworked you could have reworked they could have reworked	I could have been reworking you could have been reworking he could have been reworking we could have been reworking you could have been reworking they could have been reworking

Negation

Simple form	V-ing form
I couldn't rework you couldn't rework he couldn't rework we couldn't rework you couldn't rework they couldn't rework	I couldn't be reworking you couldn't be reworking he couldn't be reworking we couldn't be reworking you couldn't be reworking they couldn't be reworking
Perfect	V-ing perfect
I couldn't have reworked you couldn't have reworked he couldn't have reworked we couldn't have reworked you couldn't have reworked they couldn't have reworked	I couldn't have been reworking you couldn't have been reworking he couldn't have been reworking we couldn't have been reworking you couldn't have been reworking they couldn't have been reworking

Interrogative form

Simple form	V-ing form
could I rework? could you rework? could he rework? could we rework? could you rework? could they rework?	could I be reworking? could you be reworking? could he be reworking? could we be reworking? could you be reworking? could they be reworking?
Perfect	V-ing perfect
could I have reworked? could you have reworked? could he have reworked? could we have reworked? could you have reworked? could they have reworked?	could I have been reworking? could you have been reworking? could he have been reworking? could we have been reworking? could you have been reworking? could they have been reworking?

Interro-negative form

Simple form	V-ing form
couldn't I rework? couldn't you rework? couldn't he rework? couldn't we rework? couldn't you rework? couldn't they rework?	couldn't I be reworking? couldn't you be reworking? couldn't he be reworking? couldn't we be reworking? couldn't you be reworking? couldn't they be reworking?
Perfect	V-ing perfect
couldn't I have reworked? couldn't you have reworked? couldn't he have reworked? couldn't we have reworked? couldn't you have reworked? couldn't they have reworked?	couldn't I have been reworking? couldn't you have been reworking? couldn't he have been reworking? couldn't we have been reworking? couldn't you have been reworking? couldn't they have been reworking?