present
I double
You double
He doubles
She doubles
It doubles
We double
They double
past
I doubled
You doubled
He doubled
She doubled
It doubled
We doubled
They doubled
future
I will double
You will double
He will double
She will double
It will double
We will double
They will double
conditional
I would double
You would double
He would double
She would double
It would double
We would double
They would double