C222133313331333131123313231333133313331311111211113313332233131133223221   >>    C22213331333133313112331323133313331333131111121111331333223313113322322   <<    C222133313331333131123313231333133313331311111211113313332233131133223223   >>      C222133313331333131123313231333133313331311111211113313332233131133223222   >>