er muss so laufen
er müssen so laufen
pro:per mod adv v
er muss so laufen .
 ɛ ɐ WORD_BOUNDARY m ʊ s WORD_BOUNDARY z oː WORD_BOUNDARY l aʊ f ə n WORD_BOUNDARY
e r WORD_BOUNDARY m u s s WORD_BOUNDARY s o WORD_BOUNDARY l a u f e n WORD_BOUNDARY