ist er dir zu schwer
ist er dir zu schwer ?
 ɪ s t WORD_BOUNDARY  ɛ ɐ WORD_BOUNDARY d iː ɐ WORD_BOUNDARY ts uː WORD_BOUNDARY ʃ v eː ɐ WORD_BOUNDARY
i s t WORD_BOUNDARY e r WORD_BOUNDARY d i r WORD_BOUNDARY z u WORD_BOUNDARY s c h w e r WORD_BOUNDARY