Kero Kero Kero Keroppi
Kero Kero Kero Keroppi
n:prop n:prop n:prop n:prop
kero kero kero keroppi .
 WORD_BOUNDARY  WORD_BOUNDARY  WORD_BOUNDARY  WORD_BOUNDARY
k e r o WORD_BOUNDARY k e r o WORD_BOUNDARY k e r o WORD_BOUNDARY k e r o p p i WORD_BOUNDARY . WORD_BOUNDARY