q r r r r
q r
n:let n:let
q r r r r .
k y WORD_BOUNDARY  ɛ ʁ WORD_BOUNDARY  ɛ ʁ WORD_BOUNDARY  ɛ ʁ WORD_BOUNDARY  ɛ ʁ WORD_BOUNDARY
q WORD_BOUNDARY r WORD_BOUNDARY r WORD_BOUNDARY r WORD_BOUNDARY r WORD_BOUNDARY