Aua aua aua aua aua
aua aua aua aua aua .
 aʊ aː WORD_BOUNDARY  aʊ aː WORD_BOUNDARY  aʊ aː WORD_BOUNDARY  aʊ aː WORD_BOUNDARY  aʊ aː WORD_BOUNDARY
a u a WORD_BOUNDARY a u a WORD_BOUNDARY a u a WORD_BOUNDARY a u a WORD_BOUNDARY a u a WORD_BOUNDARY