aua aua aua aua
aua aua aua aua .
a ʊ aː WORD_BOUNDARY a ʊ aː WORD_BOUNDARY a ʊ aː WORD_BOUNDARY a ʊ aː WORD_BOUNDARY
a u a WORD_BOUNDARY a u a WORD_BOUNDARY a u a WORD_BOUNDARY a u a WORD_BOUNDARY . WORD_BOUNDARY