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 can't vacuum you can't vacuum he can't vacuum we can't vacuum you can't vacuum they can't vacuum	I can't be vacuuming you can't be vacuuming he can't be vacuuming we can't be vacuuming you can't be vacuuming they can't be vacuuming
Perfect	V-ing perfect
I can't have vacuumed you can't have vacuumed he can't have vacuumed we can't have vacuumed you can't have vacuumed they can't have vacuumed	I can't have been vacuuming you can't have been vacuuming he can't have been vacuuming we can't have been vacuuming you can't have been vacuuming they can't 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't I vacuum? can't you vacuum? can't he vacuum? can't we vacuum? can't you vacuum? can't they vacuum?	can't I be vacuuming? can't you be vacuuming? can't he be vacuuming? can't we be vacuuming? can't you be vacuuming? can't they be vacuuming?
Perfect	V-ing perfect
can't I have vacuumed? can't you have vacuumed? can't he have vacuumed? can't we have vacuumed? can't you have vacuumed? can't they have vacuumed?	can't I have been vacuuming? can't you have been vacuuming? can't he have been vacuuming? can't we have been vacuuming? can't you have been vacuuming? can't they have been vacuuming?