English verb conjugation COULD SEAL

Regular verb: seal - sealed - sealed

Affirmation

Simple form

I could seal
you could seal
he could seal
we could seal
you could seal
they could seal

V-ing form

I could be sealing
you could be sealing
he could be sealing
we could be sealing
you could be sealing
they could be sealing

Perfect

I could have sealed
you could have sealed
he could have sealed
we could have sealed
you could have sealed
they could have sealed

V-ing perfect

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

Negation

Simple form

I could not seal
you could not seal
he could not seal
we could not seal
you could not seal
they could not seal

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I seal?
could you seal?
could he seal?
could we seal?
could you seal?
could they seal?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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