Present
I cough
you cough
he coughs
we cough
you cough
they cough

Perfect
I have coughed
you have coughed
he has coughed
we have coughed
you have coughed
they have coughed

Past
I coughed
you coughed
he coughed
we coughed
you coughed
they coughed

Pluperfect
I had coughed
you had coughed
he had coughed
we had coughed
you had coughed
they had coughed

Future
I will cough
you will cough
he will cough
we will cough
you will cough
they will cough

Future perfect
I will have coughed
you will have coughed
he will have coughed
we will have coughed
you will have coughed
they will have coughed

Present
I cough
you cough
he cough
we cough
you cough
they cough

Present
I have coughed
you have coughed
he have coughed
we have coughed
you have coughed
they have coughed

Imperfect
I coughed
you coughed
he coughed
we coughed
you coughed
they coughed

Pluperfect
I had coughed
you had coughed
he had coughed
we had coughed
you had coughed
they had coughed

Present
I would cough
you would cough
he would cough
we would cough
you would cough
they would cough

Perfect
I would have coughed
you would have coughed
he would have coughed
we would have coughed
you would have coughed
they would have coughed

you cough
we Let's cough
you cough

Present
I am coughing
you are coughing
he is coughing
we are coughing
you are coughing
they are coughing

Perfect
I have been coughing
you have been coughing
he has been coughing
we have been coughing
you have been coughing
they have been coughing

Past
I was coughing
you were coughing
he was coughing
we were coughing
you were coughing
they were coughing

Pluperfect
I had been coughing
you had been coughing
he had been coughing
we had been coughing
you had been coughing
they had been coughing

Future
I will be coughing
you will be coughing
he will be coughing
we will be coughing
you will be coughing
they will be coughing

Future perfect
I will have been coughing
you will have been coughing
he will have been coughing
we will have been coughing
you will have been coughing
they will have been coughing

Present
I would be coughing
you would be coughing
he would be coughing
we would be coughing
you would be coughing
they would be coughing

Perfect
I would have been coughing
you would have been coughing
he would have been coughing
we would have been coughing
you would have been coughing
they would have been coughing