zer esan+dau ba
zer esan dau ba ?
s̪̻ e ɾ WORD_BOUNDARY e s̺ a n WORD_BOUNDARY d̪ au̯ WORD_BOUNDARY β a WORD_BOUNDARY
z e r WORD_BOUNDARY e s a n WORD_BOUNDARY d a u WORD_BOUNDARY b a WORD_BOUNDARY ? WORD_BOUNDARY