To undergo

present
I undergo
You undergo
He undergoes
She undergoes
It undergoes
We undergo
They undergo
past
I underwent
You underwent
He underwent
She underwent
It underwent
We underwent
They underwent
future
I will undergo
You will undergo
He will undergo
She will undergo
It will undergo
We will undergo
They will undergo
conditional
I would undergo
You would undergo
He would undergo
She would undergo
It would undergo
We would undergo
They would undergo