das ist 'n alter Mann
das ist 'n alter mann .
d a s WORD_BOUNDARY  ɪ s t WORD_BOUNDARY  ɛ n WORD_BOUNDARY  a l t ɜ WORD_BOUNDARY m a n WORD_BOUNDARY
d a s WORD_BOUNDARY i s t WORD_BOUNDARY ' n WORD_BOUNDARY a l t e r WORD_BOUNDARY m a n n WORD_BOUNDARY