"I thought that that was the answer."

Note the immediate repetition of a single word, in a perfectly good english sentence. What other examples can we come up with? Can we exceed just a repeating pair, and perhaps get a triple play? or even quadruple -- or better?

No fair to:
-- use battology; or
-- make a word into a proper name (e.g., "Major Major" from Catch-22); or
-- refer to a word as a word (I saw that "that" that that signpainter had misspelled.).