ach was hast du denn hier
ach was hast du denn hier ?
 a x WORD_BOUNDARY v a s WORD_BOUNDARY h a s t WORD_BOUNDARY d uː WORD_BOUNDARY d ɛ n WORD_BOUNDARY h iː ɐ WORD_BOUNDARY
a c h WORD_BOUNDARY w a s WORD_BOUNDARY h a s t WORD_BOUNDARY d u WORD_BOUNDARY d e n n WORD_BOUNDARY h i e r WORD_BOUNDARY