C111112111133131121133133313331311331333131323133313232233132313221   >>    C11111211113313112113313331333131133133313132313331323223313231322   <<    C111112111133131121133133313331311331333131323133313232233132313223   >>      C111112111133131121133133313331311331333131323133313232233132313222   >>