present
I upgrade
You upgrade
He upgrades
She upgrades
It upgrades
We upgrade
They upgrade
past
I upgraded
You upgraded
He upgraded
She upgraded
It upgraded
We upgraded
They upgraded
future
I will upgrade
You will upgrade
He will upgrade
She will upgrade
It will upgrade
We will upgrade
They will upgrade
conditional
I would upgrade
You would upgrade
He would upgrade
She would upgrade
It would upgrade
We would upgrade
They would upgrade