Shuffles can be combined one after another—function composition is the "operation" of this group.
ʃ ʌ f ə l z WORD_BOUNDARY k æ n WORD_BOUNDARY b iː WORD_BOUNDARY k ə m b aɪ n d WORD_BOUNDARY w ʌ n WORD_BOUNDARY æ f t ə ɹ ɹ WORD_BOUNDARY ʌ n ʌ ð ə ɹ WORD_BOUNDARY f ʌ ŋ k ʃ ə n WORD_BOUNDARY k ɑ m p ə z ɪ ʃ ə n WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ɪ WORD_BOUNDARY ɑ p ə ɹ ɹ eɪ ʃ ə n WORD_BOUNDARY ʌ v WORD_BOUNDARY ð ɪ s WORD_BOUNDARY ɡ ɹ uː p WORD_BOUNDARY