empezaron a pelear
empezaron a pelear .
e̞ m p e̞ s a ɾ o̞ n WORD_BOUNDARY a WORD_BOUNDARY p e̞ l e̞ a ɾ WORD_BOUNDARY
e m p e z a r o n WORD_BOUNDARY a WORD_BOUNDARY p e l e a r WORD_BOUNDARY . WORD_BOUNDARY