ach das bist du
ach das bist du .
a x WORD_BOUNDARY d̺ aː s WORD_BOUNDARY b ɪ s t̺ʰ WORD_BOUNDARY d̺ uː WORD_BOUNDARY
a c h WORD_BOUNDARY d a s WORD_BOUNDARY b i s t WORD_BOUNDARY d u WORD_BOUNDARY . WORD_BOUNDARY