could overbrake
Regular verb: overbrake - overbraked- overbraked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overbrake
you could overbrake
she could overbrake
we could overbrake
you could overbrake
they could overbrake 	I could be overbraking
you could be overbraking
she could be overbraking
we could be overbraking
you could be overbraking
they could be overbraking	I could have overbraked
you could have overbraked
she could have overbraked
we could have overbraked
you could have overbraked
they could have overbraked	I could have been overbraking
you could have been overbraking
she could have been overbraking
we could have been overbraking
you could have been overbraking
they could have been overbraking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overbrake
you couldn't overbrake
she couldn't overbrake
we couldn't overbrake
you couldn't overbrake
they couldn't overbrake 	I couldn't be overbraking
you couldn't be overbraking
she couldn't be overbraking
we couldn't be overbraking
you couldn't be overbraking
they couldn't be overbraking	I couldn't have overbraked
you couldn't have overbraked
she couldn't have overbraked
we couldn't have overbraked
you couldn't have overbraked
they couldn't have overbraked	I couldn't have been overbraking
you couldn't have been overbraking
she couldn't have been overbraking
we couldn't have been overbraking
you couldn't have been overbraking
they couldn't have been overbraking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overbrake?
could you overbrake?
could she overbrake?
could we overbrake?
could you overbrake?
could they overbrake? 	could I be overbraking?
could you be overbraking?
could she be overbraking?
could we be overbraking?
could you be overbraking?
could they be overbraking? 	could I have overbraked?
could you have overbraked?
could she have overbraked?
could we have overbraked?
could you have overbraked?
could they have overbraked? 	could I have been overbraking?
could you have been overbraking?
could she have been overbraking?
could we have been overbraking?
could you have been overbraking?
could they have been overbraking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overbrake?
couldn't you overbrake?
couldn't she overbrake?
couldn't we overbrake?
couldn't you overbrake?
couldn't they overbrake? 	couldn't I be overbraking?
couldn't you be overbraking?
couldn't she be overbraking?
couldn't we be overbraking?
couldn't you be overbraking?
couldn't they be overbraking? 	couldn't I have overbraked?
couldn't you have overbraked?
couldn't she have overbraked?
couldn't we have overbraked?
couldn't you have overbraked?
couldn't they have overbraked? 	couldn't I have been overbraking?
couldn't you have been overbraking?
couldn't she have been overbraking?
couldn't we have been overbraking?
couldn't you have been overbraking?
couldn't they have been overbraking?