English verb conjugation COULD SIFT

Regular verb: sift - sifted - sifted

Affirmation

Simple form

I could sift
you could sift
he could sift
we could sift
you could sift
they could sift

V-ing form

I could be sifting
you could be sifting
he could be sifting
we could be sifting
you could be sifting
they could be sifting

Perfect

I could have sifted
you could have sifted
he could have sifted
we could have sifted
you could have sifted
they could have sifted

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I sift?
could you sift?
could he sift?
could we sift?
could you sift?
could they sift?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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