siang siang siang+siang bobo
siang siang siang siang bobo .
s i a ŋ WORD_BOUNDARY s i a ŋ WORD_BOUNDARY s i a ŋ WORD_BOUNDARY s i a ŋ WORD_BOUNDARY b o b o WORD_BOUNDARY
s i a n g WORD_BOUNDARY s i a n g WORD_BOUNDARY s i a n g WORD_BOUNDARY s i a n g WORD_BOUNDARY b o b o WORD_BOUNDARY . WORD_BOUNDARY