tang ning teng nong
tang ning teng nong .
t a ŋ WORD_BOUNDARY n i ŋ WORD_BOUNDARY t ɛ ŋ WORD_BOUNDARY n o ŋ WORD_BOUNDARY
t a n g WORD_BOUNDARY n i n g WORD_BOUNDARY t e n g WORD_BOUNDARY n o n g WORD_BOUNDARY