English verb conjugation COULD COUGH

Regular verb: cough - coughed - coughed

Affirmation

Simple form

I could cough
you could cough
he could cough
we could cough
you could cough
they could cough

V-ing form

I could be coughing
you could be coughing
he could be coughing
we could be coughing
you could be coughing
they could be coughing

Perfect

I could have coughed
you could have coughed
he could have coughed
we could have coughed
you could have coughed
they could have coughed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I cough?
could you cough?
could he cough?
could we cough?
could you cough?
could they cough?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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