I can brail you can brail he can brail we can brail you can brail they can brail
V-ing form
I can be brailing you can be brailing he can be brailing we can be brailing you can be brailing they can be brailing
Perfect
I can have brailed you can have brailed he can have brailed we can have brailed you can have brailed they can have brailed
V-ing perfect
I can have been brailing you can have been brailing he can have been brailing we can have been brailing you can have been brailing they can have been brailing
Negation
Simple form
I can't brail you can't brail he can't brail we can't brail you can't brail they can't brail
V-ing form
I can't be brailing you can't be brailing he can't be brailing we can't be brailing you can't be brailing they can't be brailing
Perfect
I can't have brailed you can't have brailed he can't have brailed we can't have brailed you can't have brailed they can't have brailed
V-ing perfect
I can't have been brailing you can't have been brailing he can't have been brailing we can't have been brailing you can't have been brailing they can't have been brailing
Interrogative form
Simple form
can I brail? can you brail? can he brail? can we brail? can you brail? can they brail?
V-ing form
can I be brailing? can you be brailing? can he be brailing? can we be brailing? can you be brailing? can they be brailing?
Perfect
can I have brailed? can you have brailed? can he have brailed? can we have brailed? can you have brailed? can they have brailed?
V-ing perfect
can I have been brailing? can you have been brailing? can he have been brailing? can we have been brailing? can you have been brailing? can they have been brailing?
Interro-negative form
Simple form
can't I brail? can't you brail? can't he brail? can't we brail? can't you brail? can't they brail?
V-ing form
can't I be brailing? can't you be brailing? can't he be brailing? can't we be brailing? can't you be brailing? can't they be brailing?
Perfect
can't I have brailed? can't you have brailed? can't he have brailed? can't we have brailed? can't you have brailed? can't they have brailed?
V-ing perfect
can't I have been brailing? can't you have been brailing? can't he have been brailing? can't we have been brailing? can't you have been brailing? can't they have been brailing?