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 cannot drill you cannot drill he cannot drill we cannot drill you cannot drill they cannot drill	I cannot be drilling you cannot be drilling he cannot be drilling we cannot be drilling you cannot be drilling they cannot be drilling
Perfect	V-ing perfect
I cannot have drilled you cannot have drilled he cannot have drilled we cannot have drilled you cannot have drilled they cannot have drilled	I cannot have been drilling you cannot have been drilling he cannot have been drilling we cannot have been drilling you cannot have been drilling they cannot 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 I not drill? can you not drill? can he not drill? can we not drill? can you not drill? can they not drill?	can I not be drilling? can you not be drilling? can he not be drilling? can we not be drilling? can you not be drilling? can they not be drilling?
Perfect	V-ing perfect
can I not have drilled? can you not have drilled? can he not have drilled? can we not have drilled? can you not have drilled? can they not have drilled?	can I not have been drilling? can you not have been drilling? can he not have been drilling? can we not have been drilling? can you not have been drilling? can they not have been drilling?