English verb conjugation COULD SIPHON

Regular verb: siphon - siphoned - siphoned

Affirmation

Simple form

I could siphon
you could siphon
he could siphon
we could siphon
you could siphon
they could siphon

V-ing form

I could be siphoning
you could be siphoning
he could be siphoning
we could be siphoning
you could be siphoning
they could be siphoning

Perfect

I could have siphoned
you could have siphoned
he could have siphoned
we could have siphoned
you could have siphoned
they could have siphoned

V-ing perfect

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

Negation

Simple form

I couldn't siphon
you couldn't siphon
he couldn't siphon
we couldn't siphon
you couldn't siphon
they couldn't siphon

V-ing form

I couldn't be siphoning
you couldn't be siphoning
he couldn't be siphoning
we couldn't be siphoning
you couldn't be siphoning
they couldn't be siphoning

Perfect

I couldn't have siphoned
you couldn't have siphoned
he couldn't have siphoned
we couldn't have siphoned
you couldn't have siphoned
they couldn't have siphoned

V-ing perfect

I couldn't have been siphoning
you couldn't have been siphoning
he couldn't have been siphoning
we couldn't have been siphoning
you couldn't have been siphoning
they couldn't have been siphoning

Interrogative form

Simple form

could I siphon?
could you siphon?
could he siphon?
could we siphon?
could you siphon?
could they siphon?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I siphon?
couldn't you siphon?
couldn't he siphon?
couldn't we siphon?
couldn't you siphon?
couldn't they siphon?

V-ing form

couldn't I be siphoning?
couldn't you be siphoning?
couldn't he be siphoning?
couldn't we be siphoning?
couldn't you be siphoning?
couldn't they be siphoning?

Perfect

couldn't I have siphoned?
couldn't you have siphoned?
couldn't he have siphoned?
couldn't we have siphoned?
couldn't you have siphoned?
couldn't they have siphoned?

V-ing perfect

couldn't I have been siphoning?
couldn't you have been siphoning?
couldn't he have been siphoning?
couldn't we have been siphoning?
couldn't you have been siphoning?
couldn't they have been siphoning?

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