hustu zo hustu zo
hustu zo hustu zo .
u s̺ t̪ u WORD_BOUNDARY s̪̻ o WORD_BOUNDARY u s̺ t̪ u WORD_BOUNDARY s̪̻ o WORD_BOUNDARY
h u s t u WORD_BOUNDARY z o WORD_BOUNDARY h u s t u WORD_BOUNDARY z o WORD_BOUNDARY . WORD_BOUNDARY