ver-schloßene Münder

so viele unterschiedliche Münder / Mundformen es auch gibt, es fliegen genug unterschiedliche Schlösser herum, damit Information zurückgehalten wird ..
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closed mouthes
there are a lot of different shapes of mouthes but an equivalent of flying forms of locks (in German there is a double sense in the word 'Schloß' for palace and lock), which are used to hold back information ...