I can brake you can brake she can brake we can brake you can brake they can brake
V-ing form
I can be braking you can be braking she can be braking we can be braking you can be braking they can be braking
Perfect
I can have braked you can have braked she can have braked we can have braked you can have braked they can have braked
V-ing perfect
I can have been braking you can have been braking she can have been braking we can have been braking you can have been braking they can have been braking
Negation
Simple form
I cannot brake you cannot brake she cannot brake we cannot brake you cannot brake they cannot brake
V-ing form
I cannot be braking you cannot be braking she cannot be braking we cannot be braking you cannot be braking they cannot be braking
Perfect
I cannot have braked you cannot have braked she cannot have braked we cannot have braked you cannot have braked they cannot have braked
V-ing perfect
I cannot have been braking you cannot have been braking she cannot have been braking we cannot have been braking you cannot have been braking they cannot have been braking
Interrogative form
Simple form
can I brake? can you brake? can she brake? can we brake? can you brake? can they brake?
V-ing form
can I be braking? can you be braking? can she be braking? can we be braking? can you be braking? can they be braking?
Perfect
can I have braked? can you have braked? can she have braked? can we have braked? can you have braked? can they have braked?
V-ing perfect
can I have been braking? can you have been braking? can she have been braking? can we have been braking? can you have been braking? can they have been braking?
Interro-negative form
Simple form
can I not brake? can you not brake? can she not brake? can we not brake? can you not brake? can they not brake?
V-ing form
can I not be braking? can you not be braking? can she not be braking? can we not be braking? can you not be braking? can they not be braking?
Perfect
can I not have braked? can you not have braked? can she not have braked? can we not have braked? can you not have braked? can they not have braked?
V-ing perfect
can I not have been braking? can you not have been braking? can she not have been braking? can we not have been braking? can you not have been braking? can they not have been braking?