English verb conjugation COULD BUTTON

Regular verb: button - buttoned - buttoned

Affirmation

Simple form

I could button
you could button
he could button
we could button
you could button
they could button

V-ing form

I could be buttoning
you could be buttoning
he could be buttoning
we could be buttoning
you could be buttoning
they could be buttoning

Perfect

I could have buttoned
you could have buttoned
he could have buttoned
we could have buttoned
you could have buttoned
they could have buttoned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I button?
could you button?
could he button?
could we button?
could you button?
could they button?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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