C1231321123223331211111131211113313331333132313331333112233232123113113312231   >>    C123132112322333121111113121111331333133313231333133311223323212311311331223   <<    C1231321123223331211111131211113313331333132313331333112233232123113113312233   >>      C1231321123223331211111131211113313331333132313331333112233232123113113312232   >>