There is no limit to the number of ranks that may exist, but the most important ranks are, in hierarchical order:
ð ɛ ɹ WORD_BOUNDARY ɪ z WORD_BOUNDARY n oʊ WORD_BOUNDARY l ɪ m ɪ t WORD_BOUNDARY t ə WORD_BOUNDARY ð ə WORD_BOUNDARY n ʌ m b ə ɹ ɹ WORD_BOUNDARY ʌ v WORD_BOUNDARY ɹ æ ŋ k s WORD_BOUNDARY ð æ t WORD_BOUNDARY m eɪ WORD_BOUNDARY ɛ ɡ z ɪ s t WORD_BOUNDARY b ʌ t WORD_BOUNDARY ð ə WORD_BOUNDARY m oʊ s t WORD_BOUNDARY ɪ m p ɔ ɹ t ə n t WORD_BOUNDARY ɹ æ ŋ k s WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY ɪ n WORD_BOUNDARY h aɪ ə ɹ ɹ ɑ ɹ k ɪ k ə l WORD_BOUNDARY ɔ ɹ d ə ɹ WORD_BOUNDARY