AEIOU
A.E.I.O.U.
AEIOU, or A.E.I.O.U., was a symbolic device utilised by the Habsburg emperors. Emperor Frederick III, who had a fondness for mythical formulae, habitually signed buildings and objects with the acronym. Frederick III did not explain its meaning at the time, though shortly before his death, he claimed it stood for "Alles Erdreich ist Österreich untertan"The above text is a snippet from Wikipedia: A.E.I.O.U.
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