English verb conjugation CAN EXIST

Regular verb: exist - existed - existed

Affirmation

Simple form

I can exist
you can exist
he can exist
we can exist
you can exist
they can exist

V-ing form

I can be existing
you can be existing
he can be existing
we can be existing
you can be existing
they can be existing

Perfect

I can have existed
you can have existed
he can have existed
we can have existed
you can have existed
they can have existed

V-ing perfect

I can have been existing
you can have been existing
he can have been existing
we can have been existing
you can have been existing
they can have been existing

Negation

Simple form

I can't exist
you can't exist
he can't exist
we can't exist
you can't exist
they can't exist

V-ing form

I can't be existing
you can't be existing
he can't be existing
we can't be existing
you can't be existing
they can't be existing

Perfect

I can't have existed
you can't have existed
he can't have existed
we can't have existed
you can't have existed
they can't have existed

V-ing perfect

I can't have been existing
you can't have been existing
he can't have been existing
we can't have been existing
you can't have been existing
they can't have been existing

Interrogative form

Simple form

can I exist?
can you exist?
can he exist?
can we exist?
can you exist?
can they exist?

V-ing form

can I be existing?
can you be existing?
can he be existing?
can we be existing?
can you be existing?
can they be existing?

Perfect

can I have existed?
can you have existed?
can he have existed?
can we have existed?
can you have existed?
can they have existed?

V-ing perfect

can I have been existing?
can you have been existing?
can he have been existing?
can we have been existing?
can you have been existing?
can they have been existing?

Interro-negative form

Simple form

can't I exist?
can't you exist?
can't he exist?
can't we exist?
can't you exist?
can't they exist?

V-ing form

can't I be existing?
can't you be existing?
can't he be existing?
can't we be existing?
can't you be existing?
can't they be existing?

Perfect

can't I have existed?
can't you have existed?
can't he have existed?
can't we have existed?
can't you have existed?
can't they have existed?

V-ing perfect

can't I have been existing?
can't you have been existing?
can't he have been existing?
can't we have been existing?
can't you have been existing?
can't they have been existing?

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