English verb conjugation
CAN VACUUM

Regular verb: vacuum - vacuumed - vacuumed

Affirmation

Simple form	V-ing form
I can vacuum you can vacuum he can vacuum we can vacuum you can vacuum they can vacuum	I can be vacuuming you can be vacuuming he can be vacuuming we can be vacuuming you can be vacuuming they can be vacuuming
Perfect	V-ing perfect
I can have vacuumed you can have vacuumed he can have vacuumed we can have vacuumed you can have vacuumed they can have vacuumed	I can have been vacuuming you can have been vacuuming he can have been vacuuming we can have been vacuuming you can have been vacuuming they can have been vacuuming

Negation

Simple form	V-ing form
I cannot vacuum you cannot vacuum he cannot vacuum we cannot vacuum you cannot vacuum they cannot vacuum	I cannot be vacuuming you cannot be vacuuming he cannot be vacuuming we cannot be vacuuming you cannot be vacuuming they cannot be vacuuming
Perfect	V-ing perfect
I cannot have vacuumed you cannot have vacuumed he cannot have vacuumed we cannot have vacuumed you cannot have vacuumed they cannot have vacuumed	I cannot have been vacuuming you cannot have been vacuuming he cannot have been vacuuming we cannot have been vacuuming you cannot have been vacuuming they cannot have been vacuuming

Interrogative form

Simple form	V-ing form
can I vacuum? can you vacuum? can he vacuum? can we vacuum? can you vacuum? can they vacuum?	can I be vacuuming? can you be vacuuming? can he be vacuuming? can we be vacuuming? can you be vacuuming? can they be vacuuming?
Perfect	V-ing perfect
can I have vacuumed? can you have vacuumed? can he have vacuumed? can we have vacuumed? can you have vacuumed? can they have vacuumed?	can I have been vacuuming? can you have been vacuuming? can he have been vacuuming? can we have been vacuuming? can you have been vacuuming? can they have been vacuuming?

Interro-negative form

Simple form	V-ing form
can I not vacuum? can you not vacuum? can he not vacuum? can we not vacuum? can you not vacuum? can they not vacuum?	can I not be vacuuming? can you not be vacuuming? can he not be vacuuming? can we not be vacuuming? can you not be vacuuming? can they not be vacuuming?
Perfect	V-ing perfect
can I not have vacuumed? can you not have vacuumed? can he not have vacuumed? can we not have vacuumed? can you not have vacuumed? can they not have vacuumed?	can I not have been vacuuming? can you not have been vacuuming? can he not have been vacuuming? can we not have been vacuuming? can you not have been vacuuming? can they not have been vacuuming?