a hayai hayai hayai hayai
a hayai hayai hayai hayai .
a WORD_BOUNDARY h a j a i WORD_BOUNDARY h a j a i WORD_BOUNDARY h a j a i WORD_BOUNDARY h a j a i WORD_BOUNDARY
a WORD_BOUNDARY h a y a i WORD_BOUNDARY h a y a i WORD_BOUNDARY h a y a i WORD_BOUNDARY h a y a i WORD_BOUNDARY