English verb conjugation CAN WITNESS

Regular verb: witness - witnessed - witnessed

Affirmation

Simple form

I can witness
you can witness
he can witness
we can witness
you can witness
they can witness

V-ing form

I can be witnessing
you can be witnessing
he can be witnessing
we can be witnessing
you can be witnessing
they can be witnessing

Perfect

I can have witnessed
you can have witnessed
he can have witnessed
we can have witnessed
you can have witnessed
they can have witnessed

V-ing perfect

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

Negation

Simple form

I cannot witness
you cannot witness
he cannot witness
we cannot witness
you cannot witness
they cannot witness

V-ing form

I cannot be witnessing
you cannot be witnessing
he cannot be witnessing
we cannot be witnessing
you cannot be witnessing
they cannot be witnessing

Perfect

I cannot have witnessed
you cannot have witnessed
he cannot have witnessed
we cannot have witnessed
you cannot have witnessed
they cannot have witnessed

V-ing perfect

I cannot have been witnessing
you cannot have been witnessing
he cannot have been witnessing
we cannot have been witnessing
you cannot have been witnessing
they cannot have been witnessing

Interrogative form

Simple form

can I witness?
can you witness?
can he witness?
can we witness?
can you witness?
can they witness?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can I not witness?
can you not witness?
can he not witness?
can we not witness?
can you not witness?
can they not witness?

V-ing form

can I not be witnessing?
can you not be witnessing?
can he not be witnessing?
can we not be witnessing?
can you not be witnessing?
can they not be witnessing?

Perfect

can I not have witnessed?
can you not have witnessed?
can he not have witnessed?
can we not have witnessed?
can you not have witnessed?
can they not have witnessed?

V-ing perfect

can I not have been witnessing?
can you not have been witnessing?
can he not have been witnessing?
can we not have been witnessing?
can you not have been witnessing?
can they not have been witnessing?

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