English verb conjugation CAN REFEREE

Regular verb: referee - refereed - refereed

Affirmation

Simple form

I can referee
you can referee
he can referee
we can referee
you can referee
they can referee

V-ing form

I can be refereeing
you can be refereeing
he can be refereeing
we can be refereeing
you can be refereeing
they can be refereeing

Perfect

I can have refereed
you can have refereed
he can have refereed
we can have refereed
you can have refereed
they can have refereed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I referee?
can you referee?
can he referee?
can we referee?
can you referee?
can they referee?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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