a subir a los árboles
a subir a los árboles ?
a WORD_BOUNDARY s u β i ɾ WORD_BOUNDARY a WORD_BOUNDARY l o̞ s WORD_BOUNDARY a ɾ β o̞ l e̞ s WORD_BOUNDARY
a WORD_BOUNDARY s u b i r WORD_BOUNDARY a WORD_BOUNDARY l o s WORD_BOUNDARY á r b o l e s WORD_BOUNDARY ? WORD_BOUNDARY