could brake
Regular verb: brake - braked- braked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could brake
you could brake
he could brake
we could brake
you could brake
they could brake 	I could be braking
you could be braking
he could be braking
we could be braking
you could be braking
they could be braking	I could have braked
you could have braked
he could have braked
we could have braked
you could have braked
they could have braked	I could have been braking
you could have been braking
he could have been braking
we could have been braking
you could have been braking
they could have been braking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not brake
you could not brake
he could not brake
we could not brake
you could not brake
they could not brake 	I could not be braking
you could not be braking
he could not be braking
we could not be braking
you could not be braking
they could not be braking	I could not have braked
you could not have braked
he could not have braked
we could not have braked
you could not have braked
they could not have braked	I could not have been braking
you could not have been braking
he could not have been braking
we could not have been braking
you could not have been braking
they could not have been braking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I brake?
could you brake?
could he brake?
could we brake?
could you brake?
could they brake? 	could I be braking?
could you be braking?
could he be braking?
could we be braking?
could you be braking?
could they be braking? 	could I have braked?
could you have braked?
could he have braked?
could we have braked?
could you have braked?
could they have braked? 	could I have been braking?
could you have been braking?
could he have been braking?
could we have been braking?
could you have been braking?
could they have been braking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not brake?
could you not brake?
could he not brake?
could we not brake?
could you not brake?
could they not brake? 	could I not be braking?
could you not be braking?
could he not be braking?
could we not be braking?
could you not be braking?
could they not be braking? 	could I not have braked?
could you not have braked?
could he not have braked?
could we not have braked?
could you not have braked?
could they not have braked? 	could I not have been braking?
could you not have been braking?
could he not have been braking?
could we not have been braking?
could you not have been braking?
could they not have been braking?