ach du willst Kaffee
ach du wollen Kaffee
on pro:per mod n
ach du willst kaffee .
 a x WORD_BOUNDARY d uː WORD_BOUNDARY v ɪ l s t WORD_BOUNDARY k a f eː WORD_BOUNDARY
a c h WORD_BOUNDARY d u WORD_BOUNDARY w i l l s t WORD_BOUNDARY k a f f e e WORD_BOUNDARY