ay ay ay bu bu
ay ay ay bu bu
co co co on on
ay ay ay bu bu !
a i WORD_BOUNDARY a i WORD_BOUNDARY a i WORD_BOUNDARY β u WORD_BOUNDARY β u WORD_BOUNDARY
a y WORD_BOUNDARY a y WORD_BOUNDARY a y WORD_BOUNDARY b u WORD_BOUNDARY b u WORD_BOUNDARY ! WORD_BOUNDARY