English verb conjugation
CAN POTTER

Regular verb: potter - pottered - pottered

Affirmation

Simple form	V-ing form
I can potter you can potter he can potter we can potter you can potter they can potter	I can be pottering you can be pottering he can be pottering we can be pottering you can be pottering they can be pottering
Perfect	V-ing perfect
I can have pottered you can have pottered he can have pottered we can have pottered you can have pottered they can have pottered	I can have been pottering you can have been pottering he can have been pottering we can have been pottering you can have been pottering they can have been pottering

Negation

Simple form	V-ing form
I cannot potter you cannot potter he cannot potter we cannot potter you cannot potter they cannot potter	I cannot be pottering you cannot be pottering he cannot be pottering we cannot be pottering you cannot be pottering they cannot be pottering
Perfect	V-ing perfect
I cannot have pottered you cannot have pottered he cannot have pottered we cannot have pottered you cannot have pottered they cannot have pottered	I cannot have been pottering you cannot have been pottering he cannot have been pottering we cannot have been pottering you cannot have been pottering they cannot have been pottering

Interrogative form

Simple form	V-ing form
can I potter? can you potter? can he potter? can we potter? can you potter? can they potter?	can I be pottering? can you be pottering? can he be pottering? can we be pottering? can you be pottering? can they be pottering?
Perfect	V-ing perfect
can I have pottered? can you have pottered? can he have pottered? can we have pottered? can you have pottered? can they have pottered?	can I have been pottering? can you have been pottering? can he have been pottering? can we have been pottering? can you have been pottering? can they have been pottering?

Interro-negative form

Simple form	V-ing form
can I not potter? can you not potter? can he not potter? can we not potter? can you not potter? can they not potter?	can I not be pottering? can you not be pottering? can he not be pottering? can we not be pottering? can you not be pottering? can they not be pottering?
Perfect	V-ing perfect
can I not have pottered? can you not have pottered? can he not have pottered? can we not have pottered? can you not have pottered? can they not have pottered?	can I not have been pottering? can you not have been pottering? can he not have been pottering? can we not have been pottering? can you not have been pottering? can they not have been pottering?