English verb conjugation COULD CALL

Regular verb: call - called - called

Affirmation

Simple form

I could call
you could call
he could call
we could call
you could call
they could call

V-ing form

I could be calling
you could be calling
he could be calling
we could be calling
you could be calling
they could be calling

Perfect

I could have called
you could have called
he could have called
we could have called
you could have called
they could have called

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I call?
could you call?
could he call?
could we call?
could you call?
could they call?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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