There are three subclasses:= = = Cnida = = =
ð ɛ ɹ ɑ ɹ WORD_BOUNDARY θ ɹ iː WORD_BOUNDARY s ʌ b k l æ s ɪ z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY s iː n iː d ə WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY