baina zer izan+zen
baina zer izan zen ?
b aɪ ɲ a WORD_BOUNDARY s̻ e ɾ WORD_BOUNDARY i s̻ a n WORD_BOUNDARY s̻ e n WORD_BOUNDARY
b a i n a WORD_BOUNDARY z e r WORD_BOUNDARY i z a n WORD_BOUNDARY z e n WORD_BOUNDARY