English verb conjugation CAN OCCUR

Regular verb: occur - occurred - occurred

Affirmation

Simple form

I can occur
you can occur
she can occur
we can occur
you can occur
they can occur

V-ing form

I can be occurring
you can be occurring
she can be occurring
we can be occurring
you can be occurring
they can be occurring

Perfect

I can have occurred
you can have occurred
she can have occurred
we can have occurred
you can have occurred
they can have occurred

V-ing perfect

I can have been occurring
you can have been occurring
she can have been occurring
we can have been occurring
you can have been occurring
they can have been occurring

Negation

Simple form

I can't occur
you can't occur
she can't occur
we can't occur
you can't occur
they can't occur

V-ing form

I can't be occurring
you can't be occurring
she can't be occurring
we can't be occurring
you can't be occurring
they can't be occurring

Perfect

I can't have occurred
you can't have occurred
she can't have occurred
we can't have occurred
you can't have occurred
they can't have occurred

V-ing perfect

I can't have been occurring
you can't have been occurring
she can't have been occurring
we can't have been occurring
you can't have been occurring
they can't have been occurring

Interrogative form

Simple form

can I occur?
can you occur?
can she occur?
can we occur?
can you occur?
can they occur?

V-ing form

can I be occurring?
can you be occurring?
can she be occurring?
can we be occurring?
can you be occurring?
can they be occurring?

Perfect

can I have occurred?
can you have occurred?
can she have occurred?
can we have occurred?
can you have occurred?
can they have occurred?

V-ing perfect

can I have been occurring?
can you have been occurring?
can she have been occurring?
can we have been occurring?
can you have been occurring?
can they have been occurring?

Interro-negative form

Simple form

can't I occur?
can't you occur?
can't she occur?
can't we occur?
can't you occur?
can't they occur?

V-ing form

can't I be occurring?
can't you be occurring?
can't she be occurring?
can't we be occurring?
can't you be occurring?
can't they be occurring?

Perfect

can't I have occurred?
can't you have occurred?
can't she have occurred?
can't we have occurred?
can't you have occurred?
can't they have occurred?

V-ing perfect

can't I have been occurring?
can't you have been occurring?
can't she have been occurring?
can't we have been occurring?
can't you have been occurring?
can't they have been occurring?

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