C1231321123223331211111131211113313331333132313331333112233232123121332212311   >>    C123132112322333121111113121111331333133313231333133311223323212312133221231   <<    C1231321123223331211111131211113313331333132313331333112233232123121332212313   >>      C1231321123223331211111131211113313331333132313331333112233232123121332212312   >>