estás en primero A
estás en primero a .
e̞ s t a s WORD_BOUNDARY e̞ n WORD_BOUNDARY p ɾ i m e̞ ɾ o̞ WORD_BOUNDARY a WORD_BOUNDARY
e s t á s WORD_BOUNDARY e n WORD_BOUNDARY p r i m e r o WORD_BOUNDARY a WORD_BOUNDARY . WORD_BOUNDARY