jingle bell jingle bell ding
jingle bell jingle bell ding
v n v n on
jingle bell jingle bell ding .
 WORD_BOUNDARY  WORD_BOUNDARY  WORD_BOUNDARY  WORD_BOUNDARY  WORD_BOUNDARY
j i n g l e WORD_BOUNDARY b e l l WORD_BOUNDARY j i n g l e WORD_BOUNDARY b e l l WORD_BOUNDARY d i n g WORD_BOUNDARY . WORD_BOUNDARY