English verb conjugation
CAN DRILL

Regular verb: drill - drilled - drilled

Affirmation

Simple form	V-ing form
I can drill you can drill he can drill we can drill you can drill they can drill	I can be drilling you can be drilling he can be drilling we can be drilling you can be drilling they can be drilling
Perfect	V-ing perfect
I can have drilled you can have drilled he can have drilled we can have drilled you can have drilled they can have drilled	I can have been drilling you can have been drilling he can have been drilling we can have been drilling you can have been drilling they can have been drilling

Negation

Simple form	V-ing form
I can't drill you can't drill he can't drill we can't drill you can't drill they can't drill	I can't be drilling you can't be drilling he can't be drilling we can't be drilling you can't be drilling they can't be drilling
Perfect	V-ing perfect
I can't have drilled you can't have drilled he can't have drilled we can't have drilled you can't have drilled they can't have drilled	I can't have been drilling you can't have been drilling he can't have been drilling we can't have been drilling you can't have been drilling they can't have been drilling

Interrogative form

Simple form	V-ing form
can I drill? can you drill? can he drill? can we drill? can you drill? can they drill?	can I be drilling? can you be drilling? can he be drilling? can we be drilling? can you be drilling? can they be drilling?
Perfect	V-ing perfect
can I have drilled? can you have drilled? can he have drilled? can we have drilled? can you have drilled? can they have drilled?	can I have been drilling? can you have been drilling? can he have been drilling? can we have been drilling? can you have been drilling? can they have been drilling?

Interro-negative form

Simple form	V-ing form
can't I drill? can't you drill? can't he drill? can't we drill? can't you drill? can't they drill?	can't I be drilling? can't you be drilling? can't he be drilling? can't we be drilling? can't you be drilling? can't they be drilling?
Perfect	V-ing perfect
can't I have drilled? can't you have drilled? can't he have drilled? can't we have drilled? can't you have drilled? can't they have drilled?	can't I have been drilling? can't you have been drilling? can't he have been drilling? can't we have been drilling? can't you have been drilling? can't they have been drilling?