"A thousand twice three thousand trees.
Six thousand trees there were.
They thought the task through thoroughly though,
and now think thrice they need.
Thrice or twice, the thinkers thought,
through thick and thoughtful thinkings.
Twice or thrice they thought and thought,
a thousand times rethinking.
Twice thought they was quite enough,
Three thought thrice and two thought twice,
The thinking would not cease."