English verb conjugation
CAN VACATION

Regular verb: vacation - vacationed - vacationed

Affirmation

Simple form	V-ing form
I can vacation you can vacation he can vacation we can vacation you can vacation they can vacation	I can be vacationing you can be vacationing he can be vacationing we can be vacationing you can be vacationing they can be vacationing
Perfect	V-ing perfect
I can have vacationed you can have vacationed he can have vacationed we can have vacationed you can have vacationed they can have vacationed	I can have been vacationing you can have been vacationing he can have been vacationing we can have been vacationing you can have been vacationing they can have been vacationing

Negation

Simple form	V-ing form
I cannot vacation you cannot vacation he cannot vacation we cannot vacation you cannot vacation they cannot vacation	I cannot be vacationing you cannot be vacationing he cannot be vacationing we cannot be vacationing you cannot be vacationing they cannot be vacationing
Perfect	V-ing perfect
I cannot have vacationed you cannot have vacationed he cannot have vacationed we cannot have vacationed you cannot have vacationed they cannot have vacationed	I cannot have been vacationing you cannot have been vacationing he cannot have been vacationing we cannot have been vacationing you cannot have been vacationing they cannot have been vacationing

Interrogative form

Simple form	V-ing form
can I vacation? can you vacation? can he vacation? can we vacation? can you vacation? can they vacation?	can I be vacationing? can you be vacationing? can he be vacationing? can we be vacationing? can you be vacationing? can they be vacationing?
Perfect	V-ing perfect
can I have vacationed? can you have vacationed? can he have vacationed? can we have vacationed? can you have vacationed? can they have vacationed?	can I have been vacationing? can you have been vacationing? can he have been vacationing? can we have been vacationing? can you have been vacationing? can they have been vacationing?

Interro-negative form

Simple form	V-ing form
can I not vacation? can you not vacation? can he not vacation? can we not vacation? can you not vacation? can they not vacation?	can I not be vacationing? can you not be vacationing? can he not be vacationing? can we not be vacationing? can you not be vacationing? can they not be vacationing?
Perfect	V-ing perfect
can I not have vacationed? can you not have vacationed? can he not have vacationed? can we not have vacationed? can you not have vacationed? can they not have vacationed?	can I not have been vacationing? can you not have been vacationing? can he not have been vacationing? can we not have been vacationing? can you not have been vacationing? can they not have been vacationing?