This formula can also be written in sigma notation as:
ð ɪ s WORD_BOUNDARY f ɔ ɹ m j ʊ l ə WORD_BOUNDARY k æ n WORD_BOUNDARY ɔ l s oʊ WORD_BOUNDARY b iː WORD_BOUNDARY ɹ ɪ t ə n WORD_BOUNDARY ɪ n WORD_BOUNDARY s ɪ ɡ m ə WORD_BOUNDARY n oʊ t eɪ ʃ ə n WORD_BOUNDARY æ z WORD_BOUNDARY