oh wer klopft 'n da
oh wer klopft 'n da ?
 oː WORD_BOUNDARY v eː ɐ WORD_BOUNDARY k l ɔ p f t WORD_BOUNDARY  ɛ n WORD_BOUNDARY d aː WORD_BOUNDARY
o h WORD_BOUNDARY w e r WORD_BOUNDARY k l o p f t WORD_BOUNDARY ' n WORD_BOUNDARY d a WORD_BOUNDARY