aa puropera atta puropera
aa puropera atta puropera .
aː WORD_BOUNDARY p ɯ r o p e r a WORD_BOUNDARY a t t a WORD_BOUNDARY p ɯ r o p e r a WORD_BOUNDARY
a a WORD_BOUNDARY p u r o p e r a WORD_BOUNDARY a t t a WORD_BOUNDARY p u r o p e r a WORD_BOUNDARY