present
I bubble
You bubble
He bubbles
She bubbles
It bubbles
We bubble
They bubble
past
I bubbled
You bubbled
He bubbled
She bubbled
It bubbled
We bubbled
They bubbled
future
I will bubble
You will bubble
He will bubble
She will bubble
It will bubble
We will bubble
They will bubble
conditional
I would bubble
You would bubble
He would bubble
She would bubble
It would bubble
We would bubble
They would bubble