a e o u a e
a e o u a e .
a WORD_BOUNDARY e̞ WORD_BOUNDARY o̞ WORD_BOUNDARY u WORD_BOUNDARY a WORD_BOUNDARY e̞ WORD_BOUNDARY
a WORD_BOUNDARY e WORD_BOUNDARY o WORD_BOUNDARY u WORD_BOUNDARY a WORD_BOUNDARY e WORD_BOUNDARY . WORD_BOUNDARY