English verb conjugation COULD OVERTURN

Regular verb: overturn - overturned - overturned

Affirmation

Simple form

I could overturn
you could overturn
he could overturn
we could overturn
you could overturn
they could overturn

V-ing form

I could be overturning
you could be overturning
he could be overturning
we could be overturning
you could be overturning
they could be overturning

Perfect

I could have overturned
you could have overturned
he could have overturned
we could have overturned
you could have overturned
they could have overturned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I overturn?
could you overturn?
could he overturn?
could we overturn?
could you overturn?
could they overturn?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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