ek ek ek ek ek ek
ek ek ek ek ek ek .
ɛ k WORD_BOUNDARY ɛ k WORD_BOUNDARY ɛ k WORD_BOUNDARY ɛ k WORD_BOUNDARY ɛ k WORD_BOUNDARY ɛ k WORD_BOUNDARY
e k WORD_BOUNDARY e k WORD_BOUNDARY e k WORD_BOUNDARY e k WORD_BOUNDARY e k WORD_BOUNDARY e k WORD_BOUNDARY