There are three reasons for relying on phonological information as an augmentation to the information available in the dictionary component. Z words are hard to find in connected speech (phonological constituents, on the other hand, can be built using bottom-up data plus grammars.) Z the appearance of an acoustic event depends on where a segment falls in a phonological constituent. (A [p] will have a burst or not depending on its position.) Z phonological categories provide interesting sequencing constraints. These reasons are independent of the problems posed by the appearance of words which are not listed in the dictionary.xxĽ HELVETICAMATH HELVETICA HELVETICA 1(DEFAULTFONT 1 (GACHA 10) (GACHA 8) (TERMINAL 8)) 44'-af<D8?źXzą