bustita bustita dau
bustita bustita dau .
b u s̺ t̪ i t̪ a WORD_BOUNDARY β u s̺ t̪ i t̪ a WORD_BOUNDARY ð au̯ WORD_BOUNDARY
b u s t i t a WORD_BOUNDARY b u s t i t a WORD_BOUNDARY d a u WORD_BOUNDARY . WORD_BOUNDARY