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 can't brake you can't brake she can't brake we can't brake you can't brake they can't brake
V-ing form
I can't be braking you can't be braking she can't be braking we can't be braking you can't be braking they can't be braking
Perfect
I can't have braked you can't have braked she can't have braked we can't have braked you can't have braked they can't have braked
V-ing perfect
I can't have been braking you can't have been braking she can't have been braking we can't have been braking you can't have been braking they can't 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't I brake? can't you brake? can't she brake? can't we brake? can't you brake? can't they brake?
V-ing form
can't I be braking? can't you be braking? can't she be braking? can't we be braking? can't you be braking? can't they be braking?
Perfect
can't I have braked? can't you have braked? can't she have braked? can't we have braked? can't you have braked? can't they have braked?
V-ing perfect
can't I have been braking? can't you have been braking? can't she have been braking? can't we have been braking? can't you have been braking? can't they have been braking?