present
I tread
You tread
He treads
She treads
It treads
We tread
They tread
past
I trod
You trod
He trod
She trod
It trod
We trod
They trod
future
I will tread
You will tread
He will tread
She will tread
It will tread
We will tread
They will tread
conditional
I would tread
You would tread
He would tread
She would tread
It would tread
We would tread
They would tread