das 's is der herd
das 's is der herd .
d a s WORD_BOUNDARY  ɛ s WORD_BOUNDARY  iː s WORD_BOUNDARY d ɛ ɾ WORD_BOUNDARY h eː ɾ t WORD_BOUNDARY
d a s WORD_BOUNDARY ' s WORD_BOUNDARY i s WORD_BOUNDARY d e r WORD_BOUNDARY h e r d WORD_BOUNDARY