os toca os toca os toca
os toca os toca os toca .
o s WORD_BOUNDARY t o k a WORD_BOUNDARY o s WORD_BOUNDARY t o k a WORD_BOUNDARY o s WORD_BOUNDARY t o k a WORD_BOUNDARY
o s WORD_BOUNDARY t o c a WORD_BOUNDARY o s WORD_BOUNDARY t o c a WORD_BOUNDARY o s WORD_BOUNDARY t o c a WORD_BOUNDARY