Some of the more important sorts of two-dimensional spirals include:
s ʌ m WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY m ɔ ɹ WORD_BOUNDARY ɪ m p ɔ ɹ t ə n t WORD_BOUNDARY s ɔ ɹ t s WORD_BOUNDARY ʌ v WORD_BOUNDARY t uː d ɪ m ɛ n ʃ ə n ə l WORD_BOUNDARY s p aɪ ə ɹ ɹ ə l z WORD_BOUNDARY ɪ ŋ k l uː d WORD_BOUNDARY