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kee Pluriel
Kopfrechnen
calcul mental
mental arithmetic
cálculo mental
ech
war
ëmmer
schlecht
am
Kapprechnen
https://lod.lu/uploads/examples/OGG/b9/b9f6afc852c53d3b5530c2ed2c0cfe62.ogg
https://lod.lu/uploads/examples/AAC/b9/b9f6afc852c53d3b5530c2ed2c0cfe62.m4a