Answer:
Thirty white horses on a red hill, First they champ, Then they stamp, Then they stand still.
You can only have it once you have given it.
They try to beat me, they try in vain. And when I win, I end the pain.
Whilst I was engaged in sitting. I spied the dead carrying the living
What comes once in a minute, twice in a moment, but never in a thousand years?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.