English verb conjugation COULD NULL

Regular verb: null - nulled - nulled

Affirmation

Simple form

I could null
you could null
he could null
we could null
you could null
they could null

V-ing form

I could be nulling
you could be nulling
he could be nulling
we could be nulling
you could be nulling
they could be nulling

Perfect

I could have nulled
you could have nulled
he could have nulled
we could have nulled
you could have nulled
they could have nulled

V-ing perfect

I could have been nulling
you could have been nulling
he could have been nulling
we could have been nulling
you could have been nulling
they could have been nulling

Negation

Simple form

I could not null
you could not null
he could not null
we could not null
you could not null
they could not null

V-ing form

I could not be nulling
you could not be nulling
he could not be nulling
we could not be nulling
you could not be nulling
they could not be nulling

Perfect

I could not have nulled
you could not have nulled
he could not have nulled
we could not have nulled
you could not have nulled
they could not have nulled

V-ing perfect

I could not have been nulling
you could not have been nulling
he could not have been nulling
we could not have been nulling
you could not have been nulling
they could not have been nulling

Interrogative form

Simple form

could I null?
could you null?
could he null?
could we null?
could you null?
could they null?

V-ing form

could I be nulling?
could you be nulling?
could he be nulling?
could we be nulling?
could you be nulling?
could they be nulling?

Perfect

could I have nulled?
could you have nulled?
could he have nulled?
could we have nulled?
could you have nulled?
could they have nulled?

V-ing perfect

could I have been nulling?
could you have been nulling?
could he have been nulling?
could we have been nulling?
could you have been nulling?
could they have been nulling?

Interro-negative form

Simple form

could I not null?
could you not null?
could he not null?
could we not null?
could you not null?
could they not null?

V-ing form

could I not be nulling?
could you not be nulling?
could he not be nulling?
could we not be nulling?
could you not be nulling?
could they not be nulling?

Perfect

could I not have nulled?
could you not have nulled?
could he not have nulled?
could we not have nulled?
could you not have nulled?
could they not have nulled?

V-ing perfect

could I not have been nulling?
could you not have been nulling?
could he not have been nulling?
could we not have been nulling?
could you not have been nulling?
could they not have been nulling?

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