C222133313331333131123313231333133313331333133313331333133313113313232212312121   >>    C22213331333133313112331323133313331333133313331333133313331311331323221231212   <<    C222133313331333131123313231333133313331333133313331333133313113313232212312123   >>      C222133313331333131123313231333133313331333133313331333133313113313232212312122   >>