a hai hai hai hai hai
aq hai
co:i co:i
a hai hai hai hai hai .
a WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY
a WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY h a i WORD_BOUNDARY