<< Any guesses on this one yet? What word, when written in capital letters, is the same forwards, backwards and upsidedown? >>
O
--- From dictionary.com ---
O \O\, interj. An exclamation used in calling or directly addressing a person or personified object; also, as an emotional or impassioned exclamation expressing pain, grief, surprise, desire, fear, etc.
For ever, O Lord, thy word is settled in heaven. --Ps. cxix. 89.
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