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Grundstufe Grundstufe  f 
a first stage, (Sch) ~junior  (Brit)  or  grade  (US)  school 
b  (Gram) positive (degree)

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"Collins German Dictionary, complete & unabridged, 5th edition 2004, © William Collins Sons & Co. Ltd. , 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004"