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pfa » pfad, pefa, pufa
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pea » peak, pela, pena
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pfa » pfad, pefa, pufa
penn » wenn, denn, pen
pea » peak, pela, pena
pruf » pruft, prof, pref
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by Amedick, E., Berthold, Rudolf, Bußmann, K. H., Ludwig, N.
Published 1958
Published 1958
Springer Berlin Heidelberg