could rework
Regular verb: rework - reworked- reworked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?