nih nih ni Ai nih
nih nih ni ai nih .
n i h WORD_BOUNDARY n i h WORD_BOUNDARY n i WORD_BOUNDARY a i WORD_BOUNDARY n i h WORD_BOUNDARY
n i h WORD_BOUNDARY n i h WORD_BOUNDARY n i WORD_BOUNDARY a i WORD_BOUNDARY n i h WORD_BOUNDARY . WORD_BOUNDARY