y los has visto solo una vez
y los has visto solo una vez ?
i WORD_BOUNDARY l o̞ s WORD_BOUNDARY a s WORD_BOUNDARY β i s t o̞ WORD_BOUNDARY s o̞ l o̞ WORD_BOUNDARY u n a WORD_BOUNDARY β e̞ s WORD_BOUNDARY
y WORD_BOUNDARY l o s WORD_BOUNDARY h a s WORD_BOUNDARY v i s t o WORD_BOUNDARY s o l o WORD_BOUNDARY u n a WORD_BOUNDARY v e z WORD_BOUNDARY ? WORD_BOUNDARY