oba tõmba-tõmba tõmba
oba tõmba-tõmba tõmba .
o b ɑ WORD_BOUNDARY t ɵ m m b a t ɵ m m b a WORD_BOUNDARY t ɵ m m b a WORD_BOUNDARY
o b a WORD_BOUNDARY t õ m b a - t õ m b a WORD_BOUNDARY t õ m b a WORD_BOUNDARY